事緣：http://hkgalden.com/view/181368/page/4

但係面對隔山打丁嘅測試則「不答」
http://hkgalden.com/view/181368/page/22

又睇唔出曲線寶
http://hkgalden.com/view/259084/page/2

http://hkgalden.com/view/258874/page/1