How much does excessive chicken baby hurt?

How much does excessive chicken baby hurt?

Not long ago, I saw such a problem in the group   There is also a Peking University students and I said, brush to a certain tone of a book, more than three years old children within 100 add and subtract, can also calculate a variety of complex engineering problems, see their children yesterday to forget the ancient poetry today, angry not to hit a place... Always feel like you and your kids...