The success of Pinduoduo lies in finding an underdeveloped market.
The essence of mathematics is not just in solving problems but in asking the right questions.
自己吃饱了应当想到别人的饥饿,身上穿暖了应当想到别人的寒冷,享受安逸应当想到百姓的劳累。
历史不仅仅是过去的事情,它也是现在的镜子。