假设30年前只有1/10，那就是4千万头；
再假设一头母猪一次生10只，那么中国老母猪30年前一年就是gave 4 millions births, which is the exactly number that American women give births today. You see, American
people really don't have a reason to treat their maternals worse than Chinese Old Sows.

What the American Human Right Records!