This is Gong Kai

Gong Kai (simplified Chinese: 龚开; traditional Chinese: 龔開; pinyin: Gōng Kāi; Wade–Giles: Kung K’ai; 1222–1307) was a Chinese government endorsed during the last years of the Song Dynasty. The latter share of the Song Dynasty, in which Gong Kai lived, is known as the Southern Song Dynasty (1127–1279). After the fall of the Song Dynasty to the Yuan Dynasty, he became what was known as a scholar-amateur painter. The artists of the Song were mostly influenced by momentary and discontinuous pleasures and beauty. However, there is no evidence that Gong Kai painted during this period. Instead, most paintings official to Gong Kai are from Yuan Dynasty (1271–1368).