What does it mean to not dare to speak nonsense after practicing for three years?

1. What does it mean to speak arrogantly after practicing for three years:

Many people just come into contact with something new to them, such as a new major, a new environment, a new When he encounters a new country, new culture, new technology, new knowledge, and all kinds of people, things, and things that are new to him, he will have this state of boasting. Regardless of praise or criticism, they are all nonsense

2. The meaning of not daring to speak nonsense after practicing for three years:

And when he has been in this state for a long enough time, his Opinions, ideas, practices, and cognitions will change. Sometimes praise turns to criticism, and sometimes derogation turns to praise. Therefore, there will be a state where you don't know what to say, and no matter what you say or do, it may not be right.

3. Summary:

Everything grows, changes, and evolves under the influence of laws. Various phenomena will occur but they will not deviate from the essential laws of the main line.