Under Former Qin and Western Yan rule

Murong Sheng was born in 373, to Murong Bao and his concubine Lady Ding, and was likely born in or near the Former Qin capital Chang'an, since Murong Bao was then a low-level official there. The first historical reference to him was around the new year 385, when the Former Qin emperor Fu Jiān, in response to an attempted rebellion by the former Former Yan emperor Murong Wei, ordered all Xianbei in Chang'an executed. (Murong Sheng's grandfather Murong Chui (Emperor Wucheng) had already rebelled late 383 and established Later Yan in 384.) Murong Sheng's uncle Murong Rou (慕容柔) was not executed, since he had been previously adopted by the eunuch Song Ya (宋牙), and Murong Rou presumably put Murong Sheng and his brother Murong Hui under his protection, for soon thereafter Murong Rou, Murong Sheng, and Murong Hui fled out of Chang'an and sought refuge with another former Forman Yan prince, Murong Chong, a cousin of Murong Sheng's, who had also led a rebellion against Former Qin near Chang'an.

In spring 385, upon hearing news that Murong Wei had been killed, Murong Chong declared himself emperor (with his state later known as Western Yan). Murong Sheng was, however, not impressed with Murong Chong, and he secretly told Murong Rou that he believed that Murong Chong will amount to nothing. His judgment was correct, for although Murong Chong captured Chang'an in summer 385, he did not govern his people well, and his Xianbei people became resentful that he stayed in Chang'an (both because he liked the city and because he feared Murong Chui) rather than seeking to head back east to their homeland. In spring 386, the general Han Yan assassinated Murong Chong. Western Yan forces than abandoned Chang'an and headed east, toward home—a journey during which they went through a succession of five more leaders (Duan Sui, Murong Yi, Murong Yao, Murong Zhong, and Murong Yong) within a span of a few months, with the regime stabilizing under Murong Yong, who settled down at the capital of Zhangzi (長子, in modern Changzhi, Shanxi). Murong Sheng, along with his uncle Murong Rou and brother Murong Hui, settled in as well.

Several months later, however, in winter 386, Murong Sheng warned Murong Rou and Murong Hui that, because of their status as Murong Chui's family, they were being suspected by Murong Yong (a distant cousin). At his urging, the three of them fled back to Later Yan. (His observations turned out to be astute, as a year later, Murong Yong had all descendants of Murong Chui and the Former Yan emperor Murong Jun (Murong Chui's older brother) remaining in his state slaughtered.) It took several months for them to reach the Later Yan capital Zhongshan (中山, in modern Baoding, Hebei). Murong Chui was very pleased at their arrival and declared a general pardon to celebrate. When Murong Chui asked Murong Sheng how things were in Zhangzi, Murong Sheng, at age 14, told him that Western Yan was in a state of disturbance and that Murong Chui, as long as he was able to rule his state will, that when he got ready to attack Western Yan, Murong Yong's soldiers would desert him. Murong Chui created him the Duke of Changle.

During Murong Chuis reign

In 389, at the age of 16, Murong Sheng was put in charge by Murong Chui of the old Former Yan capital Jicheng (modern Beijing). In 391, he was given the title of viceroy. He remained there until around the new year 396, when, in light of his father Murong Bao's defeat by Northern Wei's prince Tuoba Gui at the Battle of Canhe Slope, Murong Chui recalled Murong Sheng and his uncle Murong Long (the viceroy at another old Former Yan capital, Longcheng (龍城, in modern Jinzhou, Liaoning) back to Zhongshan with their troops, to prepare for another attack on Northern Wei. In spring 396, Murong Chui's campaign against Northern Wei was initially successful, but he then got ill and was forced to withdraw back to Zhongshan, and he died on the way. Murong Bao succeeded him.

During Murong Baos reign

Murong Bao then faced a succession issue. Murong Hui, now the Duke of Qinghe, was most favored by Murong Chui and considered the most capable, and when Murong Chui waged his last campaign, he put Murong Hui in charge of Longcheng. As Murong Chui was on his deathbed, he further told Murong Bao to make Murong Hui his crown prince, but Murong Bao favored his young son Murong Ce (慕容策) the Duke of Puyang, and did not favor Murong Hui. Murong Sheng, who was slightly older than Murong Hui, also did not want Murong Hui to be crown prince, and so also encouraged Murong Bao to create Murong Ce crown prince. Murong Bao did so in fall 396, and created Murong Hui and Murong Sheng princes (in Murong Sheng's case, the Prince of Changle). Murong Hui was displeased and secretly considered rebellion.

Later in 396, Northern Wei launched a major attack on Later Yan, quickly taking Bing Province (并州, modern central and northern Shanxi) and then descending on Zhongshan, putting it under siege. In spring 397, after being unable to force Northern Wei to lift its siege and after Murong Bao's brother Murong Lin the Prince of Zhao rebelled, Murong Bao decided to abandon Zhongshan and flee to Longcheng. Murong Sheng followed his father in joining his brother Murong Hui's army, which had advanced south from Longcheng. Later that year, after Murong Hui killed Murong Long and severely wounded another uncle, Murong Nong, in an attempted coup to force Murong Bao to create him crown prince, Murong Hui was defeated and killed. Meanwhile, Murong Sheng became one of the major generals.

In 398, against Murong Sheng's and Murong Nong's advice, Murong Bao insisted on launching another campaign to try to regain territory lost to Northern Wei, putting Murong Sheng in charge of Longcheng as he departed. The tired troops mutinied on the way, forcing him to return to Longcheng to defend it with Murong Sheng, but when Murong Nong then inexplicably surrendered to the rebels, Longcheng fell, and Murong Bao and Murong Sheng were forced to flee to Jicheng. Murong Sheng's father-in-law Lan Han then took control of Longcheng and offered to welcome Murong Bao back. Murong Sheng, not trusting his father-in-law, advised his father to secretly advance south to try to join forces with his granduncle Murong De, who had been still defending Yecheng, not realizing that by that point Murong De had abandoned Yecheng and regrouped at Huatai (滑台, in modern Anyang, Henan) and declared his own independent state of Southern Yan. As Murong Bao and Murong Sheng arrived in vicinity of Huatai, however, they realized this and fled back north again. On the way, Murong Sheng tried to garner support from the people now under Northern Wei rule to coalesce around Murong Bao to start a new resistance, but Murong Bao, now believing in Lan Han's loyalty, was resolved to return to Longcheng despite Murong Sheng's misgivings. Murong Sheng, after being unable to change his father's mind, left his father and hid himself.

His worries about Lan Han turned out to be correct, for as Murong Bao arrived in Longcheng's vicinity, Lan Han had his brother Lan Jia'nan (蘭加難) intercept Murong Bao and kill him. Lan Han then killed Murong Sheng's brother Murong Ce, along with most members of the Murong imperial house, and declared himself the Prince of Changli, apparently having successfully taken over the remaining territories of Later Yan.

Coup against Lan Han

Upon hearing his father's death and Lan Han's coup, Murong Sheng resolved to immediately head to Longcheng to mourn his father, believing that Lan Han would have pity on him, after having killed his father, and would spare him based on his having married Lan Han's daughter. His judgment was correct, and with his wife Princess Lan's, and her mother Lady Yi's intercession, Murong Sheng was spared, despite repeated requests by Lan Han's brothers Lan Ti (蘭堤) and Lan Jia'nan to have Murong Sheng killed.

Lan Han also spared Murong Qi (慕容奇) the Prince of Taiyuan, whose mother was also a daughter of Lan Han. Murong Sheng and Murong Qi then conspired for Murong Qi to flee out of the city and start an uprising. Murong Sheng, meanwhile, suggested to Lan Han that Lan Ti, not himself, was behind Murong Qi's rebellion. Further, at this time, because of a severe drought, Lan Han went to pray to the Later Yan ancestral temples and Murong Bao's spirit, blaming Murong Bao's murder on Lan Jia'nan. Upon hearing these things, Lan Ti and Lan Jia'nan became angry and started a rebellion of their own. Lan Han's crown prince Lan Mu, meanwhile, suggested that Murong Sheng be killed, and Lan Han initially agreed, but Murong Sheng, upon hearing the news through Princess Lan, declined to attend an imperial meeting that Lan Han called, and Lan Han soon changed his mind.

Soon thereafter, after Lan Mu had won a victory over Lan Ti and Lan Jia'nan, Lan Han held a feast for the soldiers, at which both he and Lan Mu became extremely drunk. Murong Sheng used this opportunity to join some army officers whom he had persuaded to join his cause, and they killed Lan Han and Lan Mu, and then Lan Ti, Lan Jia'nan, and Lan Han's other sons Lan He (蘭和) the Duke of Lu and Lan Yang (蘭揚) the Duke of Chen. Murong Sheng then declared Later Yan's restoration and took the throne, but in order to show humility, did so with his present title of Prince of Changle, rather than claiming imperial title immediately.

Reign

Initially, the people were glad that Murong Sheng was victorious, believing that he would be a capable ruler. That Murong Sheng's reign would be a harsh one, however, was immediately hinted at as he considered executing his wife Princess Lan as being of the traitor Lan Han's family. His mother Consort Ding opposed—citing the fact that Princess Lan had protected both Murong Sheng and her—and Princess Lan was spared, but was never able to become empress. (However, Murong Sheng would also never create another person as empress during his reign.) In winter 398, he formally accepted imperial title, and he honored his father's wife Empress Duan as the empress dowager, while honoring his mother with the title Empress Xianzhuang (獻莊皇后).

Murong Sheng's reign, indeed, was one in which he showed strong personal abilities, and yet at the same time alienated the officials and the people with his harshness. As a result, many officials were executed based on actual or suspected treasonous plots. These included:

• Fall 398: the general Ma Le and Murong Sheng's cousins Murong Chong (慕容崇, note different character than the Western Yan emperor) the Duke of Gaoyang and Murong Cheng (慕容澄) the Duke of Dongping (sons of Murong Long)

• Winter 398: the general Murong Hao (慕容豪) (probably a cousin) and the officials Zhang Tong and Zhang Shun

• Spring 399: the officials Liu Zhong (留忠), Liu Zhi (留志), Duan Cheng (段成), and Murong Gen (慕容根) the Duke of Dongyang

• Spring 399 as well: the generals Zhang Zhen and He Han (和翰)

• Fall 399: the general Li Lang (李朗)

• Winter 399: the general Wei Shuang (衛雙)

However, Murong Sheng was also praised by historians for his attention to ordinary criminal cases, and that he was able to institute a system where he personally heard criminal appeals and was able to discern the truth without resorting to torture (a common interrogation device in Chinese history). Through the next few years, there would be battles with Northern Wei, with neither side being able to decisively gain an advantage.

Around new year 400, Murong Sheng created his son Murong Ding (慕容定) the Duke of Liaoxi. Soon thereafter, Empress Dowager Duan died, and he honored his mother as empress dowager instead and, at the same time, created Murong Ding crown prince. He also soon, to show humility, stopped using the title emperor, instead referring to himself as "Commoner Heavenly Prince."

In fall 401, the generals Murong Guo, Qin Yu (秦輿), and Duan Zan (段讚) secretly plotted a coup, but their plot was revealed, and more than 500 people were executed. Five days later, the general Duan Ji (段璣), along with Qin Yu's son Qin Xing (秦興) and Duan Zan's son Duan Tai (段泰) attacked the palace. Murong Sheng personally led the palace guards to fight with the rebels and was initially successful. However, just as things appeared to be settling down, a rebel soldier appeared from his hiding place and stabbed Murong Sheng. Murong Sheng, despite the injury, ordered the guards to clear the palace and go on the correct alert posts, before dying. After his death, his mother Empress Dowager Ding, who had carried on an affair with his uncle Murong Xi, would bypass Crown Prince Ding and make Murong Xi emperor to succeed him.

Era names

• Jianping (建平 jiàn píng) 398

• Changle (長樂 cháng lè) 399–401

Personal information

• Father

　• Murong Bao (Emperor Huimin)

• Mother

　• Consort Ding (forced to commit suicide 402), posthumously honored as Empress Xianyou

• Wife

　• Princess Lan, daughter of Lan Han

• Children

　• Murong Ding (慕容定), initially the Duke of Liaoxi (created 400), later the Crown Prince (created 400, forced to commit suicide 401)

生平

年少時沈實敏銳，富謀略。當前秦天王苻堅誅殺慕容氏時，與叔父慕容柔潛逃投靠慕容沖。385年，慕容衝在阿房宮即皇帝位。慕容盛對慕容柔說：「夫十人之長，亦須才過九人，然後得安。今中山王才不逮人，功未有成，而驕汰已甚，殆難濟乎！」慕容衝果然很快被殺，慕容柔、慕容盛以及慕容盛的弟弟慕容會又投靠慕容永。慕容盛指出三人是慕容垂子孫，正被世系疏遠的慕容永猜疑，不如投奔祖父慕容垂。387年，他們從長子縣一起逃回了後燕。不久慕容永果然盡殺治下的慕容儁、慕容垂子孫。

其父慕容寶登基後，慕容盛反對立祖父慕容垂所愛的庶弟慕容會為儲，而支持嫡出的三弟慕容策。慕容會後來謀反被誅。

段速骨叛變後，慕容寶想南奔投靠叔叔慕容德，被慕容盛勸阻。慕容德已自稱燕王，不但無意迎接慕容寶還意圖謀害，慕容寶又回到龍城，受蘭汗誆騙而遭殺害，慕容策亦遇害。慕容盛因為是蘭汗的女婿，與妻子關係甚篤，非但得以不死，還被蘭汗封做侍中。慕容盛乘機離間蘭汗、蘭堤和蘭加難三兄弟，派遣太原王慕容奇（蘭汗外孫）在建安聚眾討伐蘭汗，當蘭汗派出其兄長太尉蘭堤討伐時，慕容盛又反間蘭汗稱慕容奇實力不足，蘭堤才是慕容奇的幕後主謀。于是，蘭汗將蘭堤之職務轉予撫軍將軍仇尼慕。如此種種，導致蘭堤和蘭加難兄弟生懼而背叛蘭汗。太子蘭穆提醒蘭汗，慕容盛是仇家，必與慕容奇勾結，蘭汗因而召見慕容盛，但慕容盛在妻蘭王妃告密下佯病不出，躲過一劫。蘭汗派遣兄子蘭全反擊慕容奇卻反被滅。蘭穆出兵討伐蘭堤、蘭加難前大宴將士，蘭汗父子喝得酩酊大醉，慕容盛與李旱等人趁機殺死蘭穆，又引兵將蘭汗亂刀砍死。又遣李旱及張真襲殺蘭汗子魯公蘭和于令支及陳公蘭揚于白狼，並捕殺蘭堤和蘭加難。

為父復仇之後，慕容盛一度想斬草除根殺死妻子蘭氏，母后丁氏不忍，進行勸阻，因此只廢黜蘭氏，終身未曾立后。慕容盛於398年8月19日（七月廿一辛亥）只改元建平，仍以長樂王稱制，諸王皆降為公。又命慕容奇停止用兵，慕容奇抗命且帶兵來攻，被慕容盛打敗並賜死。11月12日（十月十七丙子）即皇帝位，並誅殺幽州刺史慕容豪、尚書左僕射張通及昌黎尹張順等人。399年改年號為長樂。400年2月11日（正月初一壬子）慕容盛自貶號為庶人天王。慕容盛後來討伐高麗及庫莫奚有功，然治法太嚴，刑罰殘忍，401年9月13日（八月二十壬辰），左將軍慕容國與殿中將軍秦輿、段贊等人密謀暗殺慕容盛，卻東窗事發，眾人皆被誅，軍中大亂。最終平亂時，慕容盛本人卻身中暗器，傷重不治，享年29歲，在位僅三年，慕容熙繼其位。

家庭

父親慕容寶。妻子是蘭汗的女兒蘭氏。兒子慕容定在慕容盛被殺害後的時候還是年紀幼小。

陵墓

慕容盛于401年閏八月十九葬于興平陵（具體方位不詳），廟號中宗，謚號昭武皇帝。

延伸閱讀

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