To determine whether a film was good or not, many factors needed to be considered, such as the quality of the film, the evaluation of the audience, the investment of the producer, and so on. The quality of a movie: A good movie usually has an excellent script, excellent director, excellent actors, exquisite production, and wonderful performances. These elements could resonate with the audience and make them feel emotions and thoughts. A bad film might lack these elements or have serious quality problems such as chaotic plot logic, poor visual effects, awkward actors, and so on. 2. The audience's evaluation: The audience's evaluation of a movie can usually be measured from box office, word of mouth, social media, and many other perspectives. Good films often received good reviews and box office earnings from the audience, and they also triggered widespread discussions and hot discussions on social media. Bad films might face problems such as low reviews, low box office sales, and poor social media response. 3. Producer's investment: The producer's investment in a good film usually includes money, manpower, technology, time, and so on. A good producer would pay attention to the details of the script, director, actors, production, and so on, striving to create an outstanding work. A lousy producer might only focus on the box office and profits and ignore the quality and artistic value of the film. Combining the above factors, we can evaluate a film to determine whether it is a good film or not. However, it should be noted that these factors are not absolute. Different people and groups may have different views and standards.