One day, Zhang San was driving along a mountain path, leisurely enjoying the beautiful scenery. Suddenly, a truck approached from the opposite direction. The driver, with teeth stained black, rolled down his window and shouted at him, "Pig!"
Feeling both confused and infuriated, Zhang San rolled down his own window and shouted back, "You're the pig!" No sooner had he finished his outburst than his car collided head-on with a group of pigs crossing the road.
(Note: Do not misinterpret the kindness of others, as it will only lead to your own loss and insult them. Before understanding the truth, learn to restrain your emotions and observe patiently to avoid regret later.)