23,963KM-2KM=23,961KM
https://www.rfa.org/cantonese/news/htm/hk-return-hongkong-hospital-restriction-01082025045635.html
https://tw.news.yahoo.com/%E7%94%B7%E6%98%9F%E9%81%AD%E7%B6%81%E6%9E%B6-%E6%B7%AA%E8%B1%AC%E4%BB%94-%E7%8D%B2%E6%95%91-%E8%A
https://www.orangenews.hk/international/1250723/%E5%A4%A7%E9%A6%AC%E5%AA%92%E9%AB%94%E6%9B%9D%E7%8E%8B%E6%98%9F%E5%88%B0%E7%
Bal b/f 73 Tempos+4 Tempos=73 Tempos Bal c/f