Need to be childless? I read as long as less than 5 (under 18) and youngest is over 1 year is OK

The CCAA limits the number of children in the household to a maximum of five.

Couples with less than 5 children under 18 years old living in the household may adopt from China.
Couples with adult children (not living in the home) may adopt from China.
Couples with more than 4 children in the family; but not all live at home, may adopt from China.
If there are more than 4 children living in the household; family may adopt only through the Waiting Children's

If you are wrong can you please amend as it is misleading.