回复： 额外教育费用和大学教育费用的部分:

This part, she must prove that
she does have 额外教育费用 , and 大学教育费用. I even do not know if my children will be able to go to college. And if it proved that my children will go to college,
I will share part of the fee. (Not all, the new father should share part of it too, according to the layer.)

And it also depends on my ability, my salary.