Update Log 2023.01.11 (v0.6.10.0005)

Now you can switch the game difficulty through the main menu.
Now You can call out the menu to pause during boss battles.
Optimized the lagging problem in the Prayer Tower's terrace and Crystal Hill's cloudy area.
Fixed the problem that the camera's looking up and down status is not reset when playing a story.
Fixed the problem that the bullets of the fly monster in the prayer bell tower may instantaneously move to Shiro and cause damage.
Fixed some text errors.