一个方块机器人的原型，可以拼装成如图所示的机器人，可收纳成20*20mm的方块。

A prototype of a block robot can be assembled into a robot as shown in the figure, which can be stored into 20*20mm blocks.

无需胶水，每条腿具有至少3个自由度。关节第一次安装起来会比较费劲。

No glue is required, and each leg has at least 3 degrees of freedom. It might be hard when you first time install the joints.