gǔ / dài / huáng / gōng / lǐ / yǒu / hěn / duō / tài / jiàn / hé / gōng / nǚ / zhí / sù / bǎo / zhèng / huáng / gōng / de / ān / quán

古代皇宫里有很多太监和宫女值宿，保证皇宫的安全。

There were many eunuchs and palace maids on night duty in the ancient imperial palace to ensure its safety.