屋顶上的天空，如此蔚蓝，如此宁静！
Every building is a prototype, because every building is unique.
The secret of getting ahead is getting started.
"In mathematics, you don't understand things. You just get used to them."
Challenges are opportunities in disguise; embrace them with courage and wisdom.
写作是驱除恶魔的方式，同时也是自我发现的过程。