The success of Pinduoduo lies in finding an underdeveloped market.
活力和毅力能战胜一切。
I'm cleaning my room， cleaning my body and expanding my heart.
In mathematics, the simplest questions often lead to the most profound discoveries.
"I strive to tell stories that are universal yet deeply personal."
多元化投资可以降低风险，但也要注意不要过度分散。