Hello, I did google it and all I got was he was jailed for 11 years after being convicted of a mysterious charge called "Inciting subversion of state power (煽动颠

Hello, I did google it and all I got was he was jailed for 11 years after being convicted of a mysterious charge called "Inciting subversion of state power (煽动颠覆国家政权罪)". It's not a charge that means a lot to those educated in the west, who would probably view it as a thought crime charge. Can you explain its use and value better?