The monastery Dashengcisi 大聖慈寺 was built with Tang Emperor Xuan-zong 唐玄宗 (685-762, r. 712-756) support in Chengdu during the rebellion of An Lu-shan 安祿山 (703-757, r. 756-757) and became the largest monastery in southern-west China. The Silla monk Wu-xiang 無相 (684-762) stimulated the rules of the the monastery Dashengcisi and of crucial to the Ch’an Sect 禪宗 in Tang. This article discusses how images of using thaumaturgic powers, the influence of Silla Buddhism and Xuan-zong’s pray for protecting the country made Wu-xiang stimulator of rules of this monastery. Through this investigation, I will examine how monastery built and relation between kingship and Buddhism in medieval China.