Vera and I divided this scene's animation:
-Vera: all nCloth, 0301, 0302, 0303, 0305
-Denian: Hand Pose, Hand animation of 0301, 0304, 0401. 2D texture of 0304, 0401.
Actually, Dorothy took the 2D texture part, but when import to 3D, I revised it to better match with hand's movement and rhythm.
The most obvious one is there are some noise and insequence white dots. Even we rerender that frame, the problem's not solved. I also tried to higher the quality and setting in final gathering, didn't work.
So at last, I used the most stupid method: correct each frame in PS...