Overgrown（俯仰之间）

Tutorials & Rules:

1. The front and back sides of each plane in the game scene are cities (villages) and forests, and the relationship between the two adjacent planes is vertical. Yin is inward and Yang is outward. Corresponds to cities and forests: Yin symbolizes barren vegetation and decaying cities, while Yang represents lush forests and developed cities.

Use the mouse to drag and rotate the two planes that are vertical to each other, and the internal and external (yin and yang) relationship of them will be changed.

2. The entire game object is an entirety, and the entirety could be rotated 90 degrees along different axes. The objects (city and forest) on each plane will move sequentially along the rotation axis.

Use the mouse to drag and rotate the lower-left corner cube to achieve this overall rotation.

3. When all cities (villages) become developed cities (all facing outward), the level will be finished.

操作方式&规则：

1.游戏场景中的每个平面的正反两面分别为城市（村镇）与森林，平面与平面之间呈90度夹角。向内为阴，朝外为阳。对应到城市和森林上：阴象征着荒芜的植被、衰败的城市 ；而阳代表着茂盛的森林、发达的城市 。

用鼠标拖拽旋转互为90度两个平面，将改变这种内外（阴阳）关系。

2.整个游戏物体为一个整体，将其整体沿不同轴向旋转90度，每个平面上的物体（城市与森林）将沿旋转轴依次移动。

用鼠标拖拽旋转左下角立方体，将达成这种整体旋转。

3.当所有城市（村镇）成为发达城市（全部朝外），进入下一关。