After nine years of the repair work, three units of Datong Yungang Grottoes, reopened to the public on July 10.
In June 2012, the grottoes 11 to 13 were closed for construction, painting and reinforcement of the dangerous rock. The project was completed last month, and reopened to the public.
Grotto 12 is famous for its 47 sculptures of musical instruments, including examples from ancient China and foreign lands, which shows the deep integration of the music and dance arts of various ethnic groups in past societies.
The Datong Yungang Grottoes are the world cultural heritage site with a long history of more than 1,500 years.