gǔ / dài / zhàn / chǎng / shàng / yī / zhī / liú / shǐ / tū / rán / cóng / chéng / qiáng / hòu / shè / lái

古代战场上，一支流矢突然从城墙后射来。

On the ancient battlefield, a stray arrow suddenly flew from behind the city wall.