Spring thunder waking the hundred insects is the image, and editions pair it with the mutiny at Chenqiao in 960, one also offering Xiao He chasing the general Han Xin by moonlight. Zhao Kuangyin commanded the palace army of the Later Zhou dynasty. When the emperor died, his heir was a boy of about seven. Sent north with the army to meet an invasion, Zhao camped at the Chenqiao post station, where his officers, worried by a child on the throne, draped a yellow imperial robe over him and hailed him as emperor. He marched back to the capital, accepted the boy's abdication and founded the Song dynasty, which lasted three centuries. A general became a ruler in a single morning, the image of a creature leaving the mud and turning into a dragon. That makes this an upper lot.