Organized empires such as the Western Han Empire would have had state armories where weapons and armor were stored. An armory list dating to 13 BCE was stated to have contained over half a sets of million armor, over half a million crossbows, over a quarter million different types of swords, tens of thousands of swordstaffs and halberds, and over half a million different types of spears and pikes/lances.

See quote for example: "The armory inventory dated 13 BCE, found in Yinwan tomb no. 6, originally thought to list the contents of the commandery armory of Donghai, might be an inventory of the capital armory in Chang'an instead, since it contains so many weapons designated "for use by the Emperor" and records more than 23,268,487 weapons, including over 500,000 crossbows, far more than would have been found in a commander armory." (IIRC, ~1.5 million of them are actual stand-alone weapons while the rest are pieces such as crossbow bolts and arrows)

-p. 1058, Section 328 of "Law, State, and Society in Early Imperial China (2 Vols): A Study with Critical Edition and Translation of the Legal Texts from Zhangjiashan Tomb No. 247" By Anthony J. Barbieri-Low, Robin D.S. Yates · 2015

Here is a link to the excerpt: https://www.google.com/books/edition/Law_State_and_Society_in_Early_Imperial/1W3sCgAAQBAJ?hl=en&gbpv=1&dq=donghai+armory&pg=PA1058&printsec=frontcover