On Wednesday, President Xi Jinping visited the Maijishan Grottoes, a UNESCO World Heritage site that is about 1,600 years old, located in Tianshui City, Gansu Province in northwest China. What makes this place special?■
On Wednesday, President Xi Jinping visited the Maijishan Grottoes, a UNESCO World Heritage site that is about 1,600 years old, located in Tianshui City, Gansu Province in northwest China. What makes this place special?■
