As the saying goes, "When your little finger passes three levels, you will have food and clothing until you are old." What does it mean? Do you have to pass it?
In the Internet era, how to create popular science? Interview with popular science popularization video blogger and science popularization writer Yan Bojun
He is the youngest internet celebrity lecturer, first prize in the Olympics, and was recommended to Tsinghua University. Luo Zhenyu spent a year finding him
General of dog meat, general of braids, general of toilets, general of crooked noses, general of Beiyang warlords, count the nicknames of the Beiyang warlords