To link a custom element with a pre-set shadow tree, you need to use the new element.
要在预设的影像树中链接自定义的元素，您需要使用新的元素。
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Pointer in my life Morning, it is a beautiful moment of the rising sun, as long as my efforts to pre-trip, all corners of the world will see my shadow.
This delicate geometry - reduced to simple pre-cast concrete members following a calculated pattern - creates an interesting light and shadow interchange.