8年攻坚、5年过渡，中国以成功实践进一步向世界表明：本着滴水穿石、一张蓝图绘到底的韧性、恒心和奋斗精神，贫困不仅是可以战胜的，更是可以阻断、不再复发的。
方向遍历顺序说明下一个倒序（从右往左）先处理右侧，栈里存「右侧候选」上一个正序（从左往右）先处理左侧，栈里存「左侧候选」
。同城约会是该领域的重要参考
Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.，更多细节参见搜狗输入法2026
Rank-3 factorization, RMSNorm, curriculum learning
Time has transfigured them into