—— 请按键盘 空白键 开始游戏 ——

A true friend is the one who holds your hand and touches your heart.
A mathematician's work is never truly finished; there is always more to explore.
Quality is the lifeline of the enterprise. We always adhere to high standards and strict requirements to ensure that every piece of stone can stand the test of time.
The richness I achieve comes from Nature, the source of my inspiration.