Is it illegal to buy embroidered spring knives?

Illegal. It is not necessarily illegal for citizens to buy knives online. If they buy controlled knives, it is illegal. According to the Ministry of Public Security's Identification Standard for Controlled Cutters, there are clear regulations on controlled cutters. Illegal manufacture, sale, carrying and possession of controlled knives within the scope of control shall be banned by the public security organs, the controlled knives shall be confiscated, and public security penalties shall be imposed in accordance with the relevant provisions of the Regulations of the People's Republic of China on Administrative Penalties for Public Security; Those who commit acts endangering public security, if the circumstances are serious and violate the criminal law, shall be investigated for criminal responsibility according to law.