An insightful portrait of everyday life of a Chinese border police station. Reinforced units fight crime, though the results are often confused and grotesque despite the diligence of the inexperienced young officers. A mentally ill man calls them out over a "corpse" he has found in his bed which turns out to be a crumpled duvet. Another man suspected of robbery cannot be made to answer questions, even using violence, because he is most likely dumb. The long and penetrating shots of director Zhao Liang gradually uncover human stories from a China that is both regimented and rapacious. This witty picture, whose comedy often has a chilly edge, provides us with an insight into how the social structure is influenced by omnipresent police repression.