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.
class Crawler {
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楊先生表示，宏福苑對於很多人來說「是他整個identity（身份），他人生一個很長時間、生命的一部分」。他聞說有居民看到火甚至害怕得想嘔吐，只能轉用電磁爐，也理解對方不想原址重建的立場。
"I want to get walking," she said. "I want to get my prosthetics [and] to go back to work.