Students line up to visit an exhibition, at Henan Museum, in Zhengzhou, central China's Henan Province, May 18, 2011. Henan Museum presented 10 promotional campaigns and exhibitions of cultural relics to mark the 35th International Museum Day on Wednesday.

The Lotus and cranes rectangular hu, a national treasure dated back to the late Spring and Autumn Period (770BC-476BC), is seen at Henan Museum, in Zhengzhou, central China's Henan Province, May 18, 2011. Henan Museum presented 10 promotional campaigns and exhibitions of cultural relics to mark the 35th International Museum Day on Wednesday.

A foreign tourist watches an ancient pottery at the period of Yangshao culture (a Neolithic culture characterized by a fine painted pottery), at Henan Museum, in Zhengzhou, central China's Henan Province, May 18, 2011. Henan Museum presented 10 promotional campaigns and exhibitions of cultural relics to mark the 35th International Museum Day on Wednesday.

Pupils watch an ancient bronze ware, at Henan Museum, in Zhengzhou, central China's Henan Province, May 18, 2011. Henan Museum presented 10 promotional campaigns and exhibitions of cultural relics to mark the 35th International Museum Day on Wednesday.