https://youtu.be/nRNTtbxJveY?si=rmrq-a2mW7oZrKkG
https://youtu.be/A7Abpi-dF3c?si=1QfJelrxAaRWOudI
https://www.google.com/amp/s/www.bbc.com/zhongwen/articles/cdjyyyjp18wo/trad.amp
省到水電：Bal b/f TW$27,740+TW$365=TW$28,105 Bal c/f
https://youtu.be/VbEMnmcC52Q?si=WHBvcrNNp6pt0KWX
