Various kinds of museums open to public in Luoyang, C China's Henan

Tourists visit the Longmen Grottoes in Luoyang, central China's Henan Province, April 11, 2018. A total of 66 museums in various kinds are open to the public in Luoyang, a city with civilization history of over 5,000 years. (Xinhua/Zhu Xiang)