"Old Mu... Old Mu..."
Jiang Hongtu noticed that the call with Old Mu suddenly cut off halfway. After calling out a few times without response, he hung up the phone.
Jiang Hongtu put away his phone, his face full of confusion. As a public official, he naturally knew about the existence of the confidentiality laws.
State secrets are classified into top secret, confidential, and secret levels.
Unless otherwise specified, the confidentiality period for top secrets does not exceed thirty years, confidential does not exceed twenty years, and secrets do not exceed ten years.
From this, it's not hard to see that top secret is already the highest level.
For example, some already declassified information today involves individuals who have made outstanding contributions in certain fields, even influencing the destiny of the nation.