"People must visit a grotto at least once in their lifetime!" You've come to the right place in Gansu! The most famous Mogao Caves in Gansu have 735 existing caves, excavated from the Sixteen Kingdoms period to the Yuan Dynasty, spanning over 1000 years, representing a microcosm of the evolution of grottoes in China.#Chinascenery #Chinatourism #TravelinGansu #GansuCulture