Qingbaikouan Period

例句：

1. 1. The Qingbaikouan Period was a time of great cultural and artistic development in China.
   青白口期是中国文化和艺术发展的重要时期。
2. 2.During the Qingbaikouan Period, there were many changes in Chinese society.
   在青白口期，中国社会发生了许多变化。
3. 3. The Qingbaikouan Period is often associated with the rise of the Manchu people.
   青白口期常常与满族人的崛起联系在一起。