Confucius' disciple Fan Chi once accompanied him for a walk under the Wuyu alter where rain-praying ritual was performed. Fan Chi asked Confucius, "Sir, how can we improve virtue? How can we correct our evil thoughts? And how can we tell right from wrong?" Confucius said, "Very good questions! You should concentrate on your work before you can gain something. This is the way to improve your virtue and review your evil thoughts. Disregarding your own safety and even that of your family members because of a moment of anger is the wrong thing that you need to distinguish and avoid. "