Abstract: No Knowledge of Prajna and No Name for Nirvana are the Buddhist works of Sengzhao in explaining sunya. The theories of Buddhist sphere adhered in these counterpart studies are different. “No knowledge of prajna” attains a mean way of view by dismissing obvious concept, category, logic, deduction and judgement, and relates itself to instant aesthetic instinct. “No name for nirvana” gives up names to attain unspeakable and unthinkable sphere, and merges into absolute aesthetic ideal and aesthetic comprehension. These two have a common way in improving the realm of Chinese aesthetic intention.