Chengzong was Kubilai Khan’s grandson and succeeded to the throne after his grandfather’s death when the Crown Prince (his father) Zhenjin passed away. Chengzong continued the legacy that his grandfather left behind continuing the patronage of Tibetan Buddhism. When requested by the Imperial Preceptor Gragspa ‘od zer to pardon Danyi Chenpo Zangpo Pal, a member of the Khon family, Chengzong, due to great respect for the Imperial preceptor appointed by his grandfather, Chengzong gave his consent. Chengzong appointed Rinchen Gyaltsen in 1305 as his Imperial Preceptor. However, Rinchen rgyal _ would serve only a short period of time before his untimely death. Chengzong offered 500 taels of gold, 1000 taels of silver 10 000 bolts of cloth and paper cash worth of 3000 silver ingots and built a stupa and temple in memory of him. Chengzong would then grant the title of Imperial Preceptor to Sang rgyal dpal who would eventually serve Chengzong, Wuzong and Renzong until is death in 1314.