Adjustment: 1. In the previous version, if the player has not unlocked other levels except Forest Cemetery, he will not enter the level selection page. Now this function is adjusted to: no matter whether other levels are unlocked or not, the level selection interface will be entered, and the unlocking conditions of the level are clearly marked in the level selection interface. (We will add more levels later) (Some players have reported that the level cannot be unlocked even if the unlocking conditions of the level are met. This problem is being solved) 2. Due to more resolutions, in order to prevent players from accidentally touching the interface outside the window, the function of locking the cursor in the window has been added during the game. The cursor can be unlocked by opening any in-game menu.