Passengers wave to railway policemen and staff members through the train window at the Lhasa Railway Station in Lhasa, southwest China's Tibet Autonomous Region, 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/Zhang Rufeng)