https://youtu.be/y-nGHnpNZEQ?si=Uj_5K2EacYD-kbbs
Bal b/f 561 Tempos+7 Tempos=568 Tempos Bal c/f
https://youtu.be/cebFgWoPOEY?si=7Jw5M9ZcJNWAi0OM
https://youtu.be/CMmpPaLj2M0?si=6bMNpsTwc_ePXwn6
真划算，只須64台幣