Not all the problems, but I think this is one of the problems that makes it difficult for the arm to display. You can see that the joints pass through the character's body parts during movement. Now, half of the arms are located inside the body, making it impossible for artificial intelligence to track the arms. (Perhaps in 3D, we can still see the arm, but in 2D videos, it becomes invisible.)
đang được dịch, vui lòng đợi..
![](//viimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)