However, at least in the reign of Shino (King of Jin), an example of Emperor Yodai of Sui Dynasty bestowing the Daishigo 'Chisha' to Zhi-yi when the Emperor had received Bosatsukai (Bodhisattva Precepts) from him can be seen, so actually, the origin of Daishigo can be thought to go back before that time.
但し、少なくとも、隋の煬帝が晋王時代に、智ギから菩薩戒を受けた時に「智者」の大師号を賜った例が見えるので、実際には、その起源は、それ以前に遡るものと考えられる。