Historical topic: What was Kaifeng called during the Three Kingdoms period?
Kaifeng was only a county system in the Three Kingdoms period, which was called Bianliang, Bianjing and Tokyo in ancient times, or Bianjing for short. The name of Kaifeng originated in the Spring and Autumn Period. At that time, Zheng Zhuanggong, the monarch of the State of Zheng, chose this place to build a granary city, so he took the meaning of expanding territory and sealed it. In the reign of Emperor Jing of the Han Dynasty (BC 156), in order to avoid the anonymity of Liu Qi, Emperor Wu of the Han Dynasty, Kaifeng was renamed Kaifeng, which should be Kaifeng County.