 King Nan was forced to beg for protection from the Duke of West Zhou, and moved out of Chengzhou to Wangcheng.In 307 BC, King Nan of Zhou hosted King Wu of Qin, who just returned victorious against Han at the Battle of Yiyang.During the visit, King Wu, a keen wrestler, decided to try lifting the "dragon-patterned red cauldron" (龍紋赤鼎) in the Zhou palace.