五层电梯，可以内外呼叫，界面友好，没有e-Five-story elevator, can be internal and external calls, friendly interface, no egg

开源个cocos2d写的游戏《保护光源》-The story happened in the 100000000 years after the worlds. When humans have to open up a new planet, as early as 1000 years ago, humans have in the development of new light sources, new star gives life to give . But one day