Different fonts, no security code. Autumn of the Mermaid is a book published by Hunan Literature and Art Publishing House in 2022 by Qian Lin.

1, the font of genuine books is clear and straight, which is convenient for readers to read, while the font of pirated books is fuzzy, which will make readers feel visual fatigue.

2. Genuine books have regular anti-counterfeiting codes, which can be scanned by mobile phones, while pirated books have no anti-counterfeiting codes.