Woah! My parents are from chongqing and I haven't been back since before covid. I agree with the other commenter about seeing pandas. My ass would want to see the subway system as it looks amazing but that's probably just me lmao.

I haven't really been to chengdu so can't comment on specific places but one thing i will say is FOOD. Ofc hotpot, but also try like 羊肉米粉(lamb noodles? i guess it translates to) and you have to try 重庆小面(chongqing little noddles? the direction translation is a bit goofy but idk how else to translate it lol). It's really hot there so try not to die of like heat stroke or anything and lastly just have fun!