Meng Da repeatedly rebelled throughout his life, when Liu Bei entered Sichuan, Meng Da surrendered to Liu Bei, and during the Battle of Xiangfan, Guan Yu's troops were defeated, so Liu Feng and Meng Da sent troops to save each other, meng Da persuaded Liu Feng not to send reinforcements, resulting in Guan Yu's defeat.
Fearing that Liu Bei would be held accountable, Meng Da left a letter to Liu Bei and led his troops to surrender to Cao Pi.
After Meng Da surrendered to Cao Pi, Cao Pi loved his talents and was good to Meng Da, and was named a Jianwu general, scattered and riding a regular attendant, becoming a close vassal of the emperor, and Cao Pi also merged the three counties of Fangling, Shangyong, and Xicheng into Xincheng County, making Meng Da the Taishou of Xincheng and becoming a "Tu Emperor".
After Cao Pi's death, Meng Da had no one to rely on, coupled with being jealous, being red-eyed, and suddenly insecure, he wrote a letter to Zhuge Liang, preparing to rebel against the State of Wei and defect to Shu Han.
Sima Yi learned that Meng Da was preparing to raise an army, too late to report to Cao Rui, immediately led the troops, thousands of miles to attack, Meng Da was caught off guard, was killed by Sima Yi, Zhuge Liang lost a perfect opportunity.
In the rendition, Meng Da rebelled and revealed the news to Sima Yi, namely Shen Yi and Shen Tan's brothers, of which Shen Yi was a brother and Shen Tan was a brother.
After killing Meng Da, Shen Yi and The brothers Shen Tan were also killed by Sima Yi, and Sima Yi crossed the river and demolished the bridge, solving the troubles of Xincheng County at one time.
In fact, in the historical records, after Meng Da was killed, Shen Yi and Shen Tan brothers were not killed by Sima Yi, but died well.
Shen Tan initially gathered thousands of people in Xiping and Shangyong Commandery, had close ties with Zhang Lu, and sent people to Cao Cao, who made him a general and served as a lieutenant of Shangyong.
At the end of Jian'an, Liu Bei attacked Shangyong, and Shen Yan led his troops to surrender to Liu Bei.
The Wei Liu records that at the beginning, thousands of families gathered between Xiping and Shangyong, and then with Zhang Lutong, he also sent envoys to Cao Gong, who added his title to general, because the envoys took the title of Shangyong Duwei. At the end of Jian'an, it was attacked by Shu and belonged to the west of its county.
In Taihe, Shen Yi and Meng Da were at odds, and repeatedly reported to the Wei court, saying that Meng Da had a rebellious heart and wanted to defect to Shu Han, and when Meng Da rebelled, Shen Yi led his army to cut off Shu Dao, resulting in Shu Han's reinforcements not being able to rescue Meng Da.
Meng Da had no reinforcements, which was equivalent to being drawn from the bottom of the cauldron and was quickly beheaded by Sima Yi. Shen Yi surrendered to the State of Wei, and Shen Yan was also forced to surrender to Wei.
After Meng Da's death, Shen Yi went to see Sima Yi, who persuaded Shen Yi to go to the capital Luoyang, and Shen Yi was appointed as the general of Lou Chuan.
The Wei Liu records that in Taihe Zhong, Yi and Meng Da were at odds, and the number of words on the list was that There was a second heart for Shu, and Da Rebellion, Yi was in the Shu Dao, so that he could not be saved. After Da's death, Yi Yi saw King Sima Xuan, who persuaded him to come to the dynasty. Yi to the Beijing Division, the edict turned to the General of the Yi Lou Ship
Shen Tan was appointed as the Taishou of Weixing and the Marquis of Lie.
Therefore, shen tan and shen yi brothers both died well.