It is the fundamental method of China's traditional Confucian culture, which comes from a sentence in The Doctrine of the Mean: "Be knowledgeable, interrogate, think carefully, distinguish clearly and stick to it".

The original intention is to study extensively, ask for knowledge in detail, think carefully, distinguish right from wrong and practice practically. There is no end to learning. There is no end to learning. You will never stop until you ask for advice and fully understand it. If you think, you will never stop, if you don't want to have some meaning.