For another bottle by Ye Zhongsan depicting the subject of a boy riding his buffalo, see Hugh Moss, Victor Graham and Ka Bo Tsang, The Art of the Chinese Snuff Bottle, The J & J Collection, Hong Kong, 1993, vol. II, p. 707, no. 432.
The subject is a common one in Chinese art. It also occurs frequently in the Beijing school of painters, particularly with the Ye family, based upon similar versions by Zhou Leyuan