The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
When financial and geopolitical waves collide
，更多细节参见51吃瓜
房屋出租人明知承租人利用出租房屋实施犯罪活动，不向公安机关报告的，处一千元以上三千元以下罚款；情节严重的，处五日以下拘留，可以并处三千元以上五千元以下罚款。
他表示「政府是應該問居民這一刻需要什麼」，再按其需要推出不同方案，會讓居民覺得「你真的在聽我的意見」。