Of the following options, the main technique of white drawing in Chinese painting is ( ).

This question is about the technique of white drawing. White drawing is the name of a Chinese painting technique, which refers to the method of drawing an image with ink lines alone without embellishment and rendering. White drawing has a single hook, double hook two kinds, with a line once drawn called single hook. The first is a light ink all hooked, and then according to the need to re-hook a part or all, called re-hooked. Repeat hook line, not according to the original line re-check again, but in order to strengthen the texture of the object, so that it is more attractive. Therefore, the question C.