Photo shows religious believers circumambulate around the Jokhang Temple for prayer in Lhasa City, capital of southwest China's Tibet. The Butter Lamp Festival is celebrated on the 25th of the 10th Tibetan lunar month, which falls on December 21 this year, to commemorate master Tsongkhapa, founder of the Gelug sect of Tibetan Buddhism. This year marks the 600th anniversary of the master’s passing away.

The Butter Lamp Festival is celebrated on the 25th of the 10th Tibetan lunar month, which falls on December 21 this year, to commemorate master Tsongkhapa, founder of the Gelug sect of Tibetan Buddhism. This year marks the 600th anniversary of the master’s passing away.

Photo shows butter lamps on roof of the Jokhang Temple in Lhasa City, capital of southwest China's Tibet.

Photo shows a monk waiting to light butter lamps in the Jokhang Temple in Lhasa City, capital of southwest China's Tibet.

Photo shows a monk is lighting butter lamps in the Jokhang Temple in Lhasa City, capital of southwest China's Tibet.

Photo shows religious believers are lighting butter lamps in a monastery on Barkhor Street in Lhasa City, capital of southwest China's Tibet.

Photo shows butter lamps inside a window of the Jokhang Temple in Lhasa City, capital of southwest China's Tibet.