Specific operation steps:

1. Open Jiuyou APP and find the search bar at the top of the home page to search.

2. Enter the undetermined event book in the search bar, and directly click the download button below to download the game.

3. You can also choose to click the game search results to enter the corresponding area, click the download game button at the bottom of the area, and download and install the game with one click.

"Undetermined List" is a legal love reasoning mobile game developed by Mihayou.