Hello, I am planning a trip in Chengdu for two days with some friends

Well, according to your travel plan, you are suggested to visit some must-sees in downtown area. Thatched Cottage of Du Fu, Wuhou Temple, Wide and Narrow Alley and Panda Breeding and Research Center are good choices for you.
In addition, Chunxi Road Pedestrian Street is a popular place for tourists. You can taste many kinds of delicious local snacks.
Have fun!