Li Keran (after) ( 1907 - 1989 ) was a Chinese painter. Li Keran (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 100 USD for Mountain Landscape with Houses, River and Boats in 2007 to 475 USD for BOY ON OX BACK in 2012 , based on the size and medium of the artwork.