It is an annual routine for the Potala Palace in Lhasa, capital of southwest China’s Tibet Autonomous Region to be repainted before the 22nd day of the 9th month on the Tibetan calendar. People will work on painting the palace's walls after the rainy season and finish it by the frozen winter to help the time-honored building survive the extreme weather conditions. /Chinanews Photo

Both the white and red palaces of the World Heritage Site, with the former now serving as offices of the Tibetan government are now being whitewashed. /Chinanews Photo

Different from other buildings, the coating for the palace’s wall is a mix of milk, sugar, honey, and some herbs, as well as local special white lime. The whole painting process will be done within 10 days. /Chinanews Photo