Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

A believer lights butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Believers light butter lamps at Taer Monastery in northwest China's Qinghai Province, Nov. 21, 2019. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)

Photo taken on Nov. 21, 2019 shows lit butter lamps at Taer Monastery in northwest China's Qinghai Province. The Butter Lamp Festival celebrates the beginning of a new year on the Tibetan calendar and is an occasion to pray for happiness and good health by lighting butter lamps. This year's festival falls on Thursday. (Xinhua/Wu Gang)