yǎng / wǎ / bǐ / cǐ / dié / fàng / kě / yǐ / bāng / zhù / wū / dǐng / dǎng / zhù / yǔ / shuǐ

仰瓦彼此叠放，可以帮助屋顶挡住雨水。

The concave roof tiles overlap to help keep rainwater out.