Three days is enough, but the driving time is a bit long, so be mentally prepared.
Day 1: Chengdu–Markang or Heishui County–Hongyuan County
The next day: Hongyuan–

Tonk

rogai
–Huahu–
rogai
Day three:
rogai
–Songpan–Maoxian–Wenchuan–Chengdu

If necessary, please contact 18030705454 to book hotels, tickets, and customized tours

If you think his answer is good, please give him a like!
Your support is a great encouragement to the author~