World-historically important era: with private and arbitrary selection criteria. Since world history is woven by the myriad of nations and regions on the planet, it is generally difficult to tell whether any year is important (whatever is …

Li Shangyin(李商隠): A great poet in the late Tang dynasty- a overwhelmed boy peeking at blue jewelry From now on, I will feature “China “7 times. Since I was a child, I have become familiar with Chinese writing and have learned Chinese ph…