Too much tea will brown your teeth, but it's good for your health; so what are you going to do?
茶喝多了会把你的牙齿染黄,但对你的身体去有好处。因此你会怎么办?
In the beginning they used to carve Chinese characters on stones to record important dates in history.
开始时,他们常把汉字刻在石头上,记载历史上重要的日期。