成玄英对“有无”这对哲学范畴的认识 ,超越了魏晋玄学的“贵无派”和“崇有派” ,他沿着僧肇所开辟的中道观路径 ,结合自己对老庄哲学的体认 ,提出双遣有无 ,并由此而进一步证实其超越有无的“重玄之道” ,深化了他对宇宙本体、世界存在的认识 Cheng Xuan-ying’s understanding of the category of “yes or no” transcends the “noble no school” and “noble school” of metaphysics in Wei and Jin dynasties. Along the path of middle school and Taoism opened by Sengzhao, To recognize and propose the existence of double deportation and to further prove its “super-mysterious way” beyond its own existence and deepen his understanding of the cosmos and the existence of the world