I think Dujiangyan's travel strategy includes:
The first day: Guanxian ancient city
After arriving in Dujiangyan in the morning, you can visit Guanxian ancient city first. There are many ancient buildings and historical sites here, such as South Bridge, Yangliuhe Street and Xuanhua Gate.
the next day: Dujiangyan Scenic Area
You can visit Dujiangyan Scenic Area the next day.
Suggested tour route: entering the scenic spot → Qingxi Garden → Tianfuyuan Teahouse → Yan Gong Dao → Fulongguan (Baokou) → Feishayan → Yuzui → Anlansuo Bridge → Qinyanlou → Erwang Temple → Songmao Ancient Road → Yuleiguan → Xiguan → Yuleige.
Note:
1. Accommodation
You can choose to stay in a homestay or hotel near the ancient city of Guanxian.
2. Transportation
You can take public transportation such as bus or taxi to Dujiangyan City. You can also drive to Dujiangyan city.