 In the second year of Qiande (961), Li Yu ascended the throne, and the resources of the country being exhausted, his minister Han Xizai obtained permission to cast coins.These were on the "Kai Yuan" model, but in seal writing devised by the scholar Xu Xuan.This coin was slightly larger than the old Kai Yuans, and had broader rims, and was found convenient by both the government and the people.