The Chinese phrase Four Great Ancient Capitals of China (中国四大古都 pinyin zhong1 guo2 si4 da4 gu3 du1) refers to Nanjing, Beijing, Xi'an, and Luoyang.
... out of which 43.6% have children under the age of 18 living with them, 67.6% are married couples living together, 11.5% have a female householder with no husband ...