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.
... "CQD" is established only to be replaced two years later by "SOS." February 7 - A fire in Baltimore, Maryland destroys over 1,500 buildings in 30 hours. February 8 - ...