Chengdu Metro Line 18-Ziyang Line will start building in 2017, and it will bring more convenience to people who shuttle between Chengdu and Ziyang. It is said that Chengdu Metro Line 18-Ziyang Line will connect airport economic zone in Ziyang province, north and center of the city,and Tuodong district, whose total length is 18.1kms. And it sets 6 stations and the maximum speed is about 140km/h.