I meant change your pc region and language.
push windows button.
type Region settings and choose Region settings
Change your region to United kingdom
Change your Region format to English (United Kingdom)
Hope it would work for you
Problem is resolved by deleting the file found in this folder: Programs\Steam\steamapps\common\Mount & Blade II Bannerlord\Modules\SandBox\ModuleData\Languages\CN
After updating a small patch this early morning, game still crash right after I hit Campaign or Custombattle.
I've bought game for 2 days now and still not tasted the game for a single moment. Sad