Some clubs in Germany have links to “Chinese” gambling sites on their club website listed under sponsors, and sometimes players make tiktoks where they read something in Chinese about the sponsor which they obviously don’t understand. However gambling is officially illegal in China, and the advertising sites go to great lengths to hide their business owners or company structures. Sometimes the even send photomodels to cosplay as business clown where they make in person deals. You might even get the idea that some (allegedly) illegal business in se asia is using football clubs to give their scam some legitimate brands and faces, so they can rip of more customers.