1971年01月.7z seems to be only 81 bytes?

1971.01 seems to be only 81 bytes in size. All the other months seem to look great.

https://github.com/fangj/rmrb/blob/master/7z/1971%E5%B9%B401%E6%9C%88.7z

Perhaps something corrupted on upload?

Thanks so much for this wonderful collection. I'm producing translations via LLM with these (see my repos).