From X40 to Metro Line 3 and then to Metro Line 6. According to Baidu map, the distance from Chengdu North Station to Jianshe Road Snack Street is 29.6 kilometers, so you need to take the bus to the subway. The train number is X40 to Metro Line 3 to Metro Line 6. The specific route is as follows:

1. First walk from Chengdu North Station 1.2km, get on the bus at Guandong Village Station and take bus x40.

Secondly, get off at Chengdu Medical College Station and transfer to Metro Line 3.

3. Finally get off at Qianfeng Road Station, transfer to Metro Line 6, get off at Jianshe North Road Station of University of Electronic Science and Technology of China, and walk 5 10 meters to Jianshe Road Snack Street.