https://youtu.be/DtWOhR4eD2w?si=xbVShhE0iYNoxY9D
https://youtu.be/Y2HEoAmK-Ws?si=fg5cIiSiOaqvHY1B
https://youtu.be/_dA9GVhPxRE?si=katsDmKdaNJPaFmn
https://www.hk01.com/%E5%8D%B3%E6%99%82%E4%B8%AD%E5%9C%8B/60217983/%E8%A9%90%E9%A8%99%E7%87%9F-%E6%9F%AC%E5%9F%94%E5%AF%A818
省到水電：Bal b/f TW$28,105+TW$365=TW$28,470 Bal c/f