The last of the four seasons; specifically the three months from the start of winter to the start of spring in the lunar calendar

government official; officeholder; bureaucrat; (bound form) belonging to the government; official; public; state-owned

The Record of Trades, a foundational work on technology and craftsmanship in ancient China likely compiled during the Warring States period; it was later added to the 周礼 zhōu​lǐ as a replacement for the missing section on the Winter Official.