2, ten years of cold window, no one asked, and became famous all over the world.
3. After ten years of grinding a sword, the frost blade has never been tried.
4. The still water is deep and does not show its edge.
5. The sharp edge of the sword comes from sharpening, and the fragrance of plum blossoms comes from bitter cold.
6. It's a long way to go, and I will go up and down for it.