After the game has been updated many times, the folder will become bigger and bigger, and it is not known which files can be deleted. The game itself has no function of cleaning up useless files. The only way is to uninstall the game, completely delete the game installation folder, and then reinstall the game. Back up the game settings in the file before uninstalling. The profile of Sword Spirit is called BNS. Back up this folder, reinstall the game and copy it back, so the game doesn't need to be reset.