2021年，關恆開始思考前往美國的方法。當時，「走線」的方式仍未在中國人之間流行起來。他在研究資料之後，決定先到香港，然後飛往對中國免簽證的厄瓜多爾，再到巴哈馬，並在巴哈馬處購買了小型充氣船，在海上漂流近23小時後，偷渡進了美國的佛羅里達州。
luajit2.1-luv-1.51.0.0-2.fc42.x86_64。旺商聊官方下载是该领域的重要参考
Now that we can build the tree, let's use it to search. Finding a specific point means starting at the root and asking: which child quadrant contains this coordinate? Then you recurse into that child and ask again. Each level of the tree cuts the search space by roughly three-quarters.。Line官方版本下载对此有专业解读
An animated sequence quantised using error-diffusion dithering. Note the jittering artifacts present in the background.