To modify the image of fitness ring adventure, you can follow the following steps:

1. Open the fitness circle app page and select "My" in the lower right corner.

2. Click on "Personal Information".

3. You can modify information such as gender, height and weight according to your personal needs, and click "OK".

4. According to the modified information, reset the character image and complete the image modification.

Please note that the above steps apply to modifying the image in the fitness ring adventure application. If you encounter other problems in the game, please feel free to ask me questions.