How to solve the problem of sprite rendering order?

[PoisonousGame]

How to solve the problem of sprite rendering order?
The sword and shield are separated into two sprites, and I need to change the order in which they are displayed in the animation. If I use z_index, the following problem will occur. Sword and shield are hidden behind trees. Since I need Ysort to sort according to the Y coordinate, and I want the sword and shield to only be rendered and sorted relative to the inside of the character, and they are at the same z-index for the outside, how to solve this problem?

The character (KinematicBody2D3) has 3 sprites, two of which are sword and shield. The sword and shield are located behind the cha sprite at the beginning. I want to play the sword drawing animation, and the sword sprite is located in front of the cha sprite. This effect can be achieved with z_index. However, when the character is placed on the map and moved, due to the z_index rendering problem, the sword and shield are hidden behind the tree.

[Calinou]

Duplicate of godotengine/godot#60748.