Rush to the top

High-altitude tracks in China are drawing scores of foreign runners, Yang Feiyue reports in Yading, Sichuan province.

As a veteran marathoner and cross-country runner who has covered a lot of terrain, Yun Yanqiao was still taken aback by Yading.

Yading is in Daocheng county, Sichuan province's Garze Tibetan autonomous prefecture and known for its mountains and natural scenery.