This term means testing for verification and validity. Wang Chong (27-97?) felt that verification and validation is the only method or standard for determining the correctness of an argument. Whether or not an idea is correct cannot be determined solely by empty words or cleverness; rather, it has to be proved through “verification and validation.”To Wang Chong, the “verification and validation” of an argument should not be based only on sensory experiences. Correct ideas can only be arrived at by using rational thinking to draw inferences from sensory experiences.

In any discussion, if one contradicts the facts and does not use verification and validation, then no matter how lovely the contents or elaborate the arguments, no one will believe them. (Wang Chong: A Comparative Study of Different Schools of Learning)