手势识别 从一到九。利用开源库。入门级别-Gesture recognition from one to nine. The use of open source libraries. Entry-level

非常好用的中国省级区域矢量区划地图，含南海九段线哦(A very easy-to-use map of china's provincial-level regional vector zoning, including the nine-segment lines of the south china sea)