What does the oriental smile mean in a cold lake at the end of New the legendary swordsman?

In fact, the finale of the new the legendary swordsman is a misnomer: what you see is Dong Fangbubai's change of heart to save Ren Yingying, and the executor is the famous murderer Hiraichi. Dong Fangbubai asked Hiraichi to bury her in a cold lake and never mentioned seeing her. Then I saw Ren Yingying come back to life with blood. To tell the truth, the ending is like a ghost story. The leader gave her his heart to save Ren Yingying, so the main reason for teaching is not that he has no heart, or that Ren Yingying's heart is changed to himself. Then we believe the second case, because in the first case, the leader died on the ice lake. In all kinds of martial arts novels and costume dramas, everything can be cured, just like the little dragon girl sleeping on the ice bed in The Condor Heroes, and the leader himself is right about the three corpses. So let Pingyi put himself in the cold lake to help him heal, so in the end, the dead leader opened his eyes. As for laughter, it's because Ren Yingying's heart is oriental, so Ren Yingying is the leader on the other hand. Do you think the leader will save Ren Yingying? Actually, you are wrong. Because the leader knows that he is a demon, Ling Huchong will not love himself. In order to be with Ling Huchong, he gave his heart to Ren Yingying. As for the East smiling in the cold lake, it is because he is finally with Ling Huchong.