Another lovely Laughing Squid link. Here's what it says (if Google Translate is semi-correct):
The origins of handmade paper dates back to the early years of the Western Han Dynasty when the 2nd century BC, when our ancestors started making the most primitive paper with bark and bark. In this age that already possesses a large amount of mechanized paper production, I hope we can know how ancestors used one hand to make China the first country in the world to invent paper!
手工造纸的起源最早可追溯到公元前2世纪时的西汉初年，那时我们的祖先便开始用麻皮和树皮制成最原始的纸张。在这个已经拥有了大量机械化生产纸张的年代，但愿我们还能知晓祖先们是怎样用一双手，让中国成为了世界上最早发明纸的国家！
Attribution(s): The world's earliest known printed book, the Diamond Sutra (via Wikipedia) is in the public domain; video via 李子柒's YouTube Channel.