元颢
In 530 AD, Chen Qingzhi, with only 7,000 troops, invaded Northern Wei, to make Yuan Hao Emperor of Northern Wei. At Liangguo, Chen's 7,000 men defeated Qiu Daqian's Northern Wei army of 70,000 men in a battle that lasted half a day, and Qiu Daqian surrendered. Chen then attacked Kaocheng, held by Yuan Huiye with 20,000 Northern Wei imperial guards. The city fell and Yuan was captured.