A new book is out. "1024-2024: The World's First Paper Currency, Chengdu, the Birthplace of Jiaozi, and the World in the Past Thousand Years" (abbreviated as "Millennium Jiaozi"), a magical paper currency. Note that during the Northern Song Dynasty, Jiaozi was spontaneously generated by the people, just like Bitcoin, Dogecoin, Shitcoin... Bitcoin and those who play with coins are also making history now. It doesn't matter if you lose money in currency speculation, as long as you have participated 😄Come on! 😄