我是特种兵之国之利刃

The best material for Tianyun's double-winged Nirvana promotion is the wind and thunder apricot tree. Of course, there are other materials, but none of them are as good as the wind and thunder apricot tree. And he only got two Fengling Apricot fruits, and he didn't know who got the Fengling Apricot tree in the end....