Everyone has a childhood and even a happy childhood maybe also not be so satisfied as it thought to be. It is scarcely easy to imagine, in today’s world, the existence of the living environment of these young wolves. Life is the epitome of our lifetime, we can always feel a quite different life from our usual life in this film with, generally speaking, a complex emotion of astonishment, depression and so on. We can always learn something when using documentary techniques to tell very complicated stories of this kind especially in terms of human nature. Their painful childhood conflicts with our own lives, as if the film story actually happened around us. As we know that documentary is a more realistic way of shooting, as a consequence, when watching the documentary telling the absurd urban stories of these boys, all the audience experienced a tremendous shock. The film can to some extend help us better understand our society. We live in a world appears to be good, but tragic stories actually happen every day. News reports are sometimes to be partial, while the documentary can tell us some unknown stories that have truly happened. This story has caused a great social reaction, the prizes awarded to it has told us the truth. The huge difference comes from the the fear of the middle class to the life of the underclass. For they have been aware that such tragic things are so close to them. We all know that documentary differs from news records, as the former sometimes uses narrative techniques. Narrative technique gives a cinematic sense of sight, but nonetheless we can always know that it is a truly happened thing. After winning prizes, there have also been some people criticizing it to be imperfect, as it hasn’t given us a positive solution. But perhaps it is what makes the film charmful, telling a real city story just as if of a neighbor from the beginning to the end. Who let we are living in the city.