Tibial stem has a wing shade which prevents rotation and reduces amount of bone-cut.

胫骨柄翼状，防止旋转并减少切骨量。

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The lower wing is popped to knock the kite into a Turtle(belly up, nose away), and the same line is popped again to perform the rotation .

较低一侧的放飞线被顿拉以敲击风筝进入“躺”（机腹向上，机头向外），然后同一根线被再次顿拉以执行平转。

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