???????; Zheng Huangniu and Yushanzhu; Momoyama period (1573-1615); early 17th century; Japan; Pair of hanging scrolls; ink on paper; Image (a): 44 in. x 18 11/16 in. (111.7 x 47.4 cm); Paintings; Kano Naizen (Japanese; 1570-1616); Inscribed by Takuan Soho (1573-1645); Zheng Huangniu; at right; and Yushanzhu; at left; were two legendary Chinese Chan (Japanese: Zen) monks often paired in Japanese painting beginning in the early Muromachi period. Zheng Huangniu (Japanese: Seiogyu); whose name means "Zheng of the Yellow Ox;" is known for riding a yellow ox to which he attached various objects; such as water jars and books