https://blog.wongcw.com/2020/12/01/%e4%bb%8a%e8%b5%b7%e5%8c%97%e4%ba%ac%e3%80%81%e4%b8%8a%e6%b5%b7%e5%9c%b0%e9%90%b5%e4%b9%98%e8%bb%8a%e4%ba%8c%e7%b6%ad%e7%a2%bc%e4%ba%92%e8%81%af%e4%ba%92%e9%80%9a/
今起北京、上海地鐵乘車二維碼互聯互通