Volunteers introduce the information about the free hometown-returning bus service to migrant workers in Hefei, east China's Anhui Province, Jan. 10, 2020. The upcoming holiday for the Spring Festival, a traditional festival for family reunions, will run from Jan. 24 to 30, while the travel rush, also known as chunyun, will last 40 days from Jan. 10 to Feb. 18. (Xinhua/Liu Junxi)