An 11.2-kilometer long giant panda-themed sky train line is under construction in Sichuan's capital, Chengdu, July 21, 2018.([Photos: VCG)

An 11.2-kilometer long giant panda-themed sky train line is under construction in Sichuan's capital, Chengdu, July 21, 2018.

The line, once completed, will mainly serve as a demonstration and sightseeing line.

The line, once completed, will mainly serve as a demonstration and sightseeing line.