Grief is a private thing. It takes as long as it takes.
悲伤是私人的事。它需要多久就会持续多久。
Success is measured not just by profits, but by the positive impact we have on the world.
The pursuit of mathematical knowledge is a never-ending adventure, filled with challenges, surprises, and the satisfaction of solving the unsolvable.
You are never too old to set another goal or to dream a new dream.