Murong Xi
Later, in 407, during the reign of Murong Bao's cruel and capricious younger brother Murong Xi, both Feng Ba and his brother Feng Sufu (馮素弗) somehow offended Murong Xi, and they hid themselves in the countryside. They concluded that they would eventually be found and killed anyway, and therefore resolved to overthrow Murong Xi. They reentered Longcheng, then capital, in secret, and then, when Murong Xi left Longcheng to bury his wife Empress Fu Xunying, who died earlier that year, they rose within the city with the assistance of their cousin Feng Wani (馮萬泥) and the generals Sun Hu (孫護) and Zhang Xing (張興). Because Feng Ba and Murong Yun were friends, he persuaded Murong Yun to serve as their leader, and they quickly captured the palace and closed the city gates. Murong Yun was then declared Heavenly Prince.