The language is one of human thinking tools. PreQin thinkers suspect the language the expressive function whether words express“Dao” completely or not. They have not evaded difficult position of the “Dao” and language, but explored the way of reach “Dao” positively by “the nonlanguage” or “the nonconventional language”. This article elaborates emphatically the way of witnessed but says saves, word instead and metaphor.