Screenwriters are often ignored. They are eclipsed by more dazzling professionals such as directors and actors, but they can make or break a play. In the early days, most screenwriters wrote plays or operas, such as Broadway. Later, due to the development of TV film technology and the decline of drama and opera, many screenwriters found it difficult to make a living, so they switched to the film and television industry. Screenwriters are often the original authors of stories and movies and TV series. A film is often written by the screenwriter first, and then given to the director for a second creation, which is completed by the director and the screenwriter. For example, the famous American sitcom Friends is like this. Tv scriptwriters, that is, people who write scripts for TV dramas, are often a group of work for new writers, and the training of TV scriptwriters usually takes three months, while the training of a senior screenwriter usually takes three to four years on average, and it may take longer if the understanding is low.