China holds celebration of 70th anniversary of Tibet's peaceful liberation

Pigeons fly over the sky during a grand gathering to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Zhai Jianlan)

Pupils attend a grand gathering to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Sun Ruibo)

A grand gathering is held to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Sun Ruibo)

People attend a grand gathering to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Jigme Dorje)

Balloons are released during a grand gathering to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Huang Jingwen)

People attend a grand gathering to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Purbu Zhaxi)

A grand gathering is held to celebrate the 70th anniversary of the peaceful liberation of Tibet at the Potala Palace square in Lhasa, southwest China's Tibet Autonomous Region, Aug. 19, 2021. More than 20,000 people from various ethnic groups attended the event held in Lhasa. (Xinhua/Chogo)