Danboard Splicing movable - 纸箱人阿楞，拼接可动

我对手臂关节进行了优化，转动起来会更加顺畅，如下图所示：：

I have optimized the arm joints to make them rotate more smoothly, as shown in the following picture::

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这是纸箱人阿楞，出自日本漫画《四叶妹妹》。头，手，脚都有简单的可动。
This is the Danboard, from the Japanese manga "Yotsuba". The head, hands, and feet are all easily movable.

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