self.config = config
同一图片、视频和文件在多个聊天中使用时，并不会重复占用手机存储空间。
，详情可参考safew官方版本下载
Цены на нефть взлетели до максимума за полгода17:55
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
Promotion methods (Traffic sources)