Tourists visit the Maijishan Grottoes in Tianshui, Gansu province, in June. As part of Xi's four-day trip to Gansu province last week, Zhao accompanied the president on a fact-finding trip to the Maijishan Grottoes, one of China's four major grottoes sites. China's vast landscape is home to nearly 6,000 cave temples, and the Chinese president lauded the nation's major grottoes …
