I'm sorry everyone.,There was a first chapter before this book.,But after discussing with the editor.,The first chapter was canceled.,But there's a paragraph in the second chapter that is related to the deleted first chapter.,It's the paragraph where the silkworm comes from.,Popsicle forgot to modify.,There was such a big bug.,Popsicle is very sorry.,It's caused great inconvenience to everyone's reading.,Now it's been modified.,Everyone rest assured to read and collect.,Say sorry to everyone again!