The effect of dragging into a specified area based on jquery_jquery

This is different from the previous two. This is a special effect that is dragged into a specified area. In fact, the logic method is similar, but the difference is to find the target element and use the appendTo method to insert it into the target element.
The specific code is as follows. Those who are interested can try it. (Since I am a beginner, it is easy to do. If you have other methods, please give me some advice. I will be very grateful...)

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