Usually it is law enforcement units such as public security law, taxation, transportation administration, road administration and urban management. As long as these units have to wear uniforms or law enforcement uniforms during their work, usually only the top leaders of the units occasionally (except for special tasks) do not wear uniforms. For example, what civil servants should wear and pay attention to, although there is no explicit provision, in fact, according to different occasions, there are some established practices from top to bottom, and you can't wear them casually.
Although there is no uniform requirement, you should try to dress appropriately in the office. Male civil servants try not to wear shorts, let alone shoes like slippers. Don't be fancy in clothing color, just give priority to one tone. Generally speaking, when working in an office, you must wear a uniform except for the requirements of individual units. Generally speaking, there is no requirement, just follow your favorite way.
Formal occasions generally wear formal clothes, and work hours should also be dressed appropriately to match the environment. Lesbians should not dress too exposed and casual, and gay men should not wear shorts and slippers. Dress is white shirt, dark pants and black leather shoes in summer; Autumn and winter are dark suits, white shirts, ties, dark pants and leather shoes. Dresses are usually worn in some formal meetings and celebrations. Except for these departments, other departments don't have high dress requirements, as long as they are clean, generous and decent.