Qing stone

例句：

1. 1.The ancient city wall is made of Qing stone.
   这座古城的城墙是用青石建造的。
2. 2.The old temple was built on a piece of Qing stone.
   这座古老的寺庙建在一块青石上。
3. 3. The path leading to the mountain summit is paved with Qing stones.
   通往山顶的小径铺满了青石。