Very few can do it, and everyone understands the reasoning.

Recently, there has been a saying circulating online that there are four things in life that you must never speak of. These four things are like four invisible pits; once you say them out loud, just wait to jump in. This saying sounds a bit mystical, but upon careful consideration, it is backed by the blood and tears of those who have been through it.
The first thing is to never tell others how you make money or how much you earn. This may sound a bit selfish, but the reality is quite harsh. You might excitedly share with friends that you've started a side business and earned a few thousand more in a month, thinking you're sharing joy, but they might already feel a different way inside. The deep truth of human nature is that no one sincerely hopes you live better than they do. What you show off today may become a target for others to scheme against you tomorrow. It's not the thief you fear, but the thief who has their eye on you. By revealing your financial situation, aren't you just inviting trouble? Some people may say congratulations but secretly plot against you. The old saying that wealth should not be flaunted is not without reason. Making money quietly and living comfortably is better than anything else.