Transfer Memories to Let Your Past Self Defeat the Witch

In the future, everyone fights with the power of the stars. Ling Yaoan met the strongest witch. Although he lost the battle, he passed his memories to his past self, but he did not expect that his memories before reincarnation were also passed on. (The author is still a student and has no plans to make money from online writing in the future. This is just a story that came to mind when I was reading a novel. The updates are unstable and I have up to 6 hours of free time every day. On 3 days, I had to work until after 9pm, and I would take a shower and sleep directly when I got home.)