云州

1

后晋以后，幽云十六州成为辽军南下攻掠中原的基地，致使北方地区的社会经济遭受严重破坏。

After the Later Jin , the sixteen cities of Youyun was a base for Liao to attack and grab from the Central Plain , which brought havoc in north China .
2

公元1022年大同云、应二州地震及其地质背景考证

Investigation of the earthquake of the year 1022 in Yun and Ying prefectures and its geological background
3

文章对公元1022年大同云、应二州6.5级地震及其地质背景进行了考证。

This paper investigates the Year 1022 earthquake of magnitude 6.5 on the Richter scale in Yun and Ying prefectures and discusses its geological background .