The following is the ranking of the main attractions in Hefei that I recommend:

1. Daishan Lake: With a beautiful environment, it integrates sightseeing, leisure and business, and is known as the "natural oxygen bar".

2. Hefei Sunac Park: an amusement park with the theme of technological elements.

3. Hefei Hanhai Polar Ocean World: an amusement park with the theme of marine life.

4. Hefei Wildlife Park: A large zoo located at the southwest foot of Dashu Mountain.

5. Hefei Botanical Garden: It is famous for its integration of ecological garden style and plant culture.

You can choose travel destinations based on your personal preferences.