Photo taken on May 16, 2016 shows the scenery of Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on April 26, 2016 shows the scenery of Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on May 17, 2016 shows the scenery of Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on May 22, 2016 shows a road along the Lhasa River in Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on April 15, 2015 shows the scenery of Longwangtan Park in Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on Nov. 11, 2015 shows the scenery of Najin Bridge in Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]

Photo taken on May 22, 2016 shows the residential buildings which are under construction in Lhasa, capital of southwest China's Tibet Autonomous Region. In the past 65 years, the city of Lhasa, which expanded its acreage to 100 square meters, has turned to be a mixed city, both ancient and modern. The Tibet region realized peaceful liberation on May 23, 1951. [Photo/Xinhua]