Aerial photo taken on Dec 30, 2017 shows the Qingyi River grand bridge on Ya’an-Kangding express highway in Southwest China’s Sichuan province. The Caoba to Luding section of Ya’an-Kangding express highway was integrated into the highway network and began its trail operation on Dec 31, which means all the 21 cities or prefectures in Sichuan are now connected with express highway. [Photo/Xinhua]
Aerial photo taken on Dec 30, 2017 shows the terminal interchanges in Duiyan town of Ya’an city on Ya’an-Kangding express highway in Southwest China’s Sichuan province.[Photo/Xinhua]
Aerial photo taken on Dec 30, 2017 shows the Qingyi River grand bridge on Ya’an-Kangding express highway in Southwest China’s Sichuan province. [Photo/Xinhua]
Aerial photo taken on Dec 29, 2017 shows the Erlang Mountain tunnel entrance on Ya’an-Kangding express highway in Southwest China’s Sichuan province.[Photo/Xinhua]
