The line of defense against a lie may be an action, a look, a tone of voice, or even a heartbeat.
When you cross that line of defense, you will see all his lies.
Shui Wutian is an office worker who was kidnapped when he was a child. This is a scar that cannot be uncovered. Since then, he has become sensitive and even has certain cognitive impairments, but the pain has given him far more than ordinary people in all aspects.
Intention: Be sensitive to some things