Updated on 21 Apr 2018: XIA Tianan (XX-XXI) is an artist born in XX The oldest auction result ever registered on the website for an artwork by this artist is a drawing-watercolor sold in 2011, at Rong Bao, and the most recent auction result is a drawing-watercolor sold in 2012. Artprice.com's price levels for this artist are based on 2 auction results. Especially: drawing-watercolor.