ah cheng is my favorite character in all of this mess , he is really the middle sibling, he is wicked, smart, capable, although depend too much on his elder brother ming lou, but he is capable if he given the chance, this remind me of louis james moriarty in moriarty the patriot, he shined just after the leaving of his brother william, ah cheng is very smart but ming lou is smarter, although both smartness is above the average !