T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million. (Photos: Xinhua)

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.

T3 terminal of Gonggar Airport is under construction in Gonggar County, southwest China's Tibet Autonomous Region, Dec. 29, 2019. After its completion, the passenger throughput of Gonggar Airport will stand at 9 million.