yè / kōng / qíng / lǎng / shí / niú / xiù / zài / gǔ / dài / xīng / tú / zhōng / qīng / xī / kě / jiàn

夜空晴朗时，牛宿在古代星图中清晰可见。

On a clear night, Niuxiu can be clearly seen on ancient star maps.