我们用数学来理解市场，而不是预测市场。
We use mathematics to understand the markets, not to predict them.
We hope that through Pinduoduo, more people can enjoy the benefits of the internet.
成功绝非偶然。它是努力、坚持、学习、牺牲，最重要的是热爱你所做的事情。
Every discovery opens the door to a thousand new questions.
The writer must be a stranger in his own country.