Yao Nai ( 1731 - 1815 ) was a painter. Yao Nai s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 27500 USD for CALLIGRAPHY IN RUNNING SCRIPT in 2013 to 43750 USD for POEMS IN RUNNING SCRIPT in 2013 , based on the size and medium of the artwork.