However due to Wu Zong's policy of suppressing Buddhism (the anti-Buddhist movement during the Kaisho era) in Tang at the time, Buddhism was on the edge of a decline, the Imperial Prince was not able to find his great teacher in Changan.
しかし、当時の唐は武宗の仏教弾圧政策（会昌の廃仏）の影響により仏教は衰退の極にあったため親王は長安で優れた師を得られなかった。