How did the dragon named Wan get its name?

As a written symbol, a name can't determine a person's fate as some fortune tellers say, but it embodies the spirit of history and culture, the information of the times and society, the brand of family lineage, the deep love and ardent expectation of parents for their children, and implies different ideals, aspirations, interests, hobbies and goal pursuits, which has a great subtle influence on life.