Joke Collection Website - Talk about mood - "Everyone in the bureau laughs and sighs, and no one outside the bureau is crazy." What does this sentence mean?

"Everyone in the bureau laughs and sighs, and no one outside the bureau is crazy." What does this sentence mean?

The authorities are confused, and the bystanders are clear. You think you are an outsider in the besieged city, so you can look on coldly and look at the people around you. I don't know that I am a player, and I am no different from others. Really look from the outside and find yourself the most sober and understanding person. But once you understand, you become an insider again.