C1351 I already have a seal
In short, that was "if you follow me then I'll live forever, if you rebel then you'll die". Qin Lang hadn't even gotten himself a title, but he was in danger of being sealed by someone. However, this seal was not aimed at Qin Lang's body, but rather at his mind.
Or for other warriors, being able to become the Vajra the Prison Protector was a very glorious thing