On the first day, you can climb down Yunlong Mountain to see the prospect of yunlong lake on the mountain, and then take a taxi to yunlong lake Water World. If you don't want to go to the water world, you can eat in the west of the water world. Those restaurants on the south bank of yunlong lake are OK. You can have a grass carp cake, eat some lake shrimp and visit the city center at night. Xuzhou night market is also good, you can spend a few dollars to entertain yourself and sell everything. In the evening, you can go to Jie Fangbei Road Electric Power Bureau to eat Erjie barbecue, the most famous barbecue in Xuzhou.