Art Terms: X  
Graphic Letter X
Xia Gui: Xia Gui was a Chinese painter that lived during the Song Dynasty in China, from 1195 to 1224 AD. He painted landscapes on scrolls in ink, a traditional Chinese technique of the time.

-Wikipedia

Xu, Jian Guo: Jian Guo Xu is a living artist from China who straddles the cravasse between Eastern and Western Art. He uses traditional Chinese brushwork and Western ideas about how colors relate to each other, combining them into abstract works with both energy and movement.

Visit Jian Guo Xu's Website.

Xugu: Xugu (1824-1896) was a Chinese painter who was born in the Anhui Province of China, although he later lived and worked in the Guangling, Jiang Province.

-Oil-Paintings Art.com: Xugu