This is the most realistic Three-Body fanfic I have ever seen. It combines the world view of Three-Body and Ball Lightning. The protagonist travels back to Wu Yue. He exchanges skills by witnessing famous scenes of Three-Body and saves the ball-shaped heroine Lin Yun at the beginning. The deduction is reasonable, not pretentious and slap-in-the-face, not shocking. Three-Body book lovers or drama lovers must not miss it.