Wei Yan
In 230, Fei Yao was promoted to the position of General of the Rear (後將軍). In the same year, the Shu regent Zhuge Liang, along with the Shu generals Wei Yan, Wu Yi and others, led Shu forces to attack Wei territories in Liang Province. Fei Yao and another Wei general, Guo Huai, engaged enemy forces under Wei Yan at Yangxi (陽溪), but were defeated and driven back.