As the summer vacation comes, visiting science popularization venues and museums has become a trendy activity. Many children accompanied by their parents go to these indoor venues for study and leisure. The photo shows residents visiting the Hunan Museum of Geology. (Photo/Xu Xing, Hunan Daily)

As the summer vacation comes, visiting science popularization venues and museums has become a trendy activity. Many children accompanied by their parents go to these indoor venues for study and leisure. The photo shows residents visiting the Hunan Museum of Geology. (Photo/Xu Xing, Hunan Daily)

As the summer vacation comes, visiting science popularization venues and museums has become a trendy activity. Many children accompanied by their parents go to these indoor venues for study and leisure. The photo shows residents visiting the Hunan Museum of Geology. (Photo/Xu Xing, Hunan Daily)

As the summer vacation comes, visiting science popularization venues and museums has become a trendy activity. Many children accompanied by their parents go to these indoor venues for study and leisure. The photo shows residents visiting the Hunan Museum of Geology. (Photo/Xu Xing, Hunan Daily)