Go to Chengdu at the end of May, arrive in Chengdu at 3 pm on the first day, and the rest of the time is free. Depart for Huanglong in the morning of the second day, stay in Jiuzhaigou on the third day, go to Diexi Haizi on the fourth day and then return to Chengdu, around 4:00 pm. On the fifth day, the train leaves Chengdu at 3 o'clock in the afternoon... I would like to ask how to arrange the corner time in Chengdu, and what kind of souvenirs are suitable for the return trip