How to Change Object Hierarchy
In addition to the default constraints based on anchor points and axes, unity also provides a rigid hierarchy.
(The authority is greater than that of the central axis anchor point)
We can use sorting Layer to specify which level the current object belongs to.
Consistent with the object relationship of unity, the lower the level, the higher the display priority.
At the same time, at the same level, we can also use this parameter to adjust the display priority.
The larger the value, the greater the priority.