He preached mainly at Chongfu-si Temple of Changan in Tang, and during staying in China he was requested to visit Japan by a learned priest from Japan Rikyo and an assistant envoy of the tenth Kento-shi (a Japanese envoy to the Tang Dynasty China) NAKATOMI no Nashiro, then he came to Japan in 736 with a priest from Kingdom of Champa Buttetsu and a priest from Tang Dosen (Daoxuan).
唐では長安の崇福寺を拠点に活動していたようで、唐滞在中に日本からの入唐僧理鏡や第十次遣唐使副使中臣名代らの要請により、チャンパ王国出身の僧仏哲・唐の僧道璿とともに736年（天平8年）に来日した。