The author was once a professional con man, and uses his own personal experience to tell readers: Cheating is a wrong path. No matter how glorious you are when you win money, you can't hide the desolation behind it. If you don't have achievements to share with your family, and you can't live in the sun like ordinary people, who knows if the next game will kill you? Who knows if friends who are still close brothers today will suddenly turn against each other in the casino and plot a frame-up?
The author uses stories that happened to him to tell all those who are lucky that gambling is the root of all evil. No matter whether you lose or win temporarily, the final result will be a loss.