Students from Xinghua Primary School visit the exhibition of clay sculptor Zhang, in north China`s Tianjin, Nov. 16, 2011. The first exhibition room of "Clay figurine Zhang", the nation`s non-material cultural heritage, opened in Xinghua Primary School. (Xinhua/Liu Dongyue)

Zhang Yu (2nd L), the 6th generation of clay sculptor Zhang, demonstrates manufacturing process to students from Xinghua Primary School, in north China`s Tianjin, Nov. 16, 2011. The first exhibition room of "Clay figurine Zhang", the nation`s non-material cultural heritage, opened in Xinghua Primary School. (Xinhua/Liu Dongyue)