Gibon Sengai ( 1750 - 1837 ) was a Japanese painter. Gibon Sengai s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 900 USD for HOTEI YAWNING, in 2004 to 21250 USD for Nanquan chopping the kitten in two in 2008 , based on the size and medium of the artwork.