You mentioned in your message that you 較偏向修腹修hip鍛練. Could you please share how or which equipment you use in the gym for these purpose?? I have the same problem too after giving birth...in fact, even before that.. :-( :cry:
I got the machine photo from Calixxxxx fitxxxx website. See if you are able to locate it by yourself. If you still have question, I will then pm the photo to you.