Versatile Mage: Start by Extracting Skills from the Three Kingdoms

The former all-powerful general in the military unexpectedly came to this world surrounded by demons and dangers. Lin Bei, who had just arrived in the world of full-time mage, was very panicked, but don't panic yet... It wasn't until he awakened that Lin Bei discovered that the epic orb he had longed for in his previous life actually appeared in his spiritual world... And you can actually use it to extract the Three Kingdoms killing skills! Some years later... When the sea monster attacked, just when the coastline was besieged on all sides and life and death were at stake, Lin Bei shouted: "Anyone who invades China's territory will be attacked and defeated by Lin!" (PS: In the original plot timeline, the protagonist does not have full memory.)