42.8 kilometers. Full journey 1 hour and 50 minutes. It's about 250 meters' walk from Jinmao Yuelongshan, take bus No.855 at the fifth intersection of Nanyi Road West, walk about 180 meters to Honghe subway station (exit B) after 7 stops, walk about 80 meters to Chengdu East Railway Station after 3 stops, take subway line 7 to Chengdu East Railway Station, walk about 320 meters to South Railway Station, and take subway 6500 to South Railway Station. After 5 stops, walk about 700 meters to Xibocheng, take the T 1 road to Xibocheng subway station, after 4 stops, walk about 10 meters to Tianfu No.7 Middle School, and arrive at Tianfu No.7 Middle School.