that of Shen Hung-lian () from the Department of Chinese Literature, National Taiwan University. At the same time, Chu also learned about An Wang's encoding scheme. On one hand, Wang's scheme further confirmed the feasibility of the encoding approach. On the other hand, it inspired Chu to think that his encoding scheme should not only be convenient for looking up a character, it should also take the form of the characters into account to make it possible to compose (draw) the character from a code. Chu assumed this could be achieved with the following three steps: