A teacher tutors a student to practice calligraphy in Deqing county, south China's Guangdong Province, June 2, 2019. In recent years, with the focus on promoting the cultural tour of the ancient post road in south China, Deqing County has developed a variety of activities by taking advantage of the historical sites, intangible cultural heritages and natural resources, so as to make tourists experience the inheritance of Chinese civilization with Lingnan characteristics. (Xinhua/Tao Ming)