File photo taken on May 15, 2007 shows the ceramic artist Ren Ruihua presents a stamp sheet of his porcelain works at his studio in Jingdezhen, east China's Jiangxi province. Ren Ruihua is a pioneer of modern porcelain in China. Combined with characteristics of the Chinese wash painting, Ren's ceramic works have been treasured by many meseums. In 2007, a stamp sheet with Ren's portrait and his works were released in Guinea-Bissau. In 2009, Ren was honored the title of one of the "Top 100 artists that influence China (1949-2009)". [Photo/Xinhua]