zuò / zhě / yòng / xī / xī / xiě / chū / zhǔ / rén / gōng / měi / yè / sī / niàn / gù / xiāng / de / xīn / qíng

作者用“昔昔”写出主人公每夜思念故乡的心情。

The author uses “昔昔” to show the protagonist missing home every night.