till the version is the newest, the lang have not "advancement"for it.
I just write down the zh_cn lang for mods, but it doesn't work.
maybe it's time to have a change for "date\unusualprehistory\advancement**.json "title:translate"&"description:translate" ?"
I sent an issue cause I'm not authorited to change the date(without permission?:P)
the mod is coooool that I am glad to provide zh_cn for it :D

the advancements can be translated next update

If youre still interested in making a translation let me know ^^