What does home office mean?

Office means dealing with official business.

The tenth time of the strange situation witnessed in 20 years: "What he means is that he thinks that people engaged in spying and patrolling must be fair." Zheng Sheng Shi Wei Yan: Cheap Salaries: "All the salaries for literature and the army will be paid at the same time, and the office expenses will be paid separately, so there is no shortage of money."

Lao She's Camel Xiangzi 20: "Mr. Xia went to the yamen for business in the morning and didn't come back until five o'clock in the afternoon. Xiangzi had to send them one by one.