孟達
At the time, many officials felt that Meng Da was untrustworthy and should not be given important responsibilities. The Wei general Sima Yi, who was stationed at Wan (宛; present-day Wancheng District, Nanyang, Henan) and oversaw the military affairs of Jing and Yu provinces at the time, also cautioned Cao Pi against putting too much faith in Meng Da, but Cao did not heed Sima's advice.