This is the third in a series of four books that is dedicated to documenting all known artworks by Sanyu. This catalogue includes 211 known watercolors by Sanyu, as well as selected drawings that serve as a sampling of Sanyu's drawing styles.  As the sheer number of drawings (1,840) precludes any practicality of printing them all on paper, a complete image index on flash drive is included. Previously published catalogue raisonnes include two volumes of Sanyu's oil paintings. The fourth book, planned for publication in 2015, will catalogue the artist's prints. This series of publications devoted to the art of Sanyu is part of the Archives of Modern Chinese Art, a program of the Li Ching Cultural and Educational Foundation, Taipei, Taiwan.