A tourist poses for photos in traditional Tibetan costume in the old town of Lhasa, capital city of southwest China's Tibet Autonomous Region, May 28, 2019. Many tourists here choose to have a picture taken as a souvenir while wearing beautiful Tibetan costumes. (Xinhua/Chogo)

A tourist poses for photos in traditional Tibetan costume in the old town of Lhasa, capital city of southwest China's Tibet Autonomous Region, May 28, 2019. Many tourists here choose to have a picture taken as a souvenir while wearing beautiful Tibetan costumes. (Xinhua/Chogo)

A tourist poses for photos in traditional Tibetan costume in the old town of Lhasa, capital city of southwest China's Tibet Autonomous Region, May 28, 2019. Many tourists here choose to have a picture taken as a souvenir while wearing beautiful Tibetan costumes. (Xinhua/Chogo)

A tourist poses for photos in traditional Tibetan costume in the old town of Lhasa, capital city of southwest China's Tibet Autonomous Region, May 28, 2019. Many tourists here choose to have a picture taken as a souvenir while wearing beautiful Tibetan costumes. (Xinhua/Chogo)

A tourist poses for photos in traditional Tibetan costume in the old town of Lhasa, capital city of southwest China's Tibet Autonomous Region, May 28, 2019. Many tourists here choose to have a picture taken as a souvenir while wearing beautiful Tibetan costumes. (Xinhua/Chogo)