Is the Sichuan Opera Face Changing a Class II national secret?

“Leaks” lead to controversy over the inheritance of Sichuan Opera

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The above is the "Law of the People's Republic of China on the Protection of State Secrets". Article 8 stipulates the scope of state secrets. Article 9 There are stipulated levels of secrecy, which one does the face change comply with? It is neither within the scope of Article 8. If it is leaked, it will not cause serious damage to the country's security and interests, so it cannot be regarded as confidential, and it has not applied for a patent.