Pekingese in the Northern Wei Dynasty

Wang Ling, a Beijinger, traveled back to the war-torn late Northern Wei Dynasty. What's terrible is that the person he possessed actually has amnesia, leaving him completely unaware of who the real owner of the body is. Fortunately, he met the Yuwen clan who were about to move south, and followed them to Hebei. Wang Ling originally planned to just hang around and stay away from right and wrong, but he could not escape the disaster and was still involved in the disputes in the late Northern Wei Dynasty. Forget it, since you can't avoid it, why not just change history for fun! For example, let the East and West Wei be reversed, something like that?