According to the regulations of Chongqing Light Rail, passengers can carry a reasonable amount of liquor on the light rail. Chongqing Light Rail does not explicitly prohibit bringing alcohol on board. However, in order to ensure the safety of the ride and the comfort of passengers, there may be some restrictions on the requirements of carrying liquor in Chongqing Light Rail. For example, passengers need to ensure that the packaging of liquor is intact and will not cause leakage or other safety hazards. In addition, passengers also need to abide by other regulations of the light rail, such as not drinking in the carriage and not disturbing other passengers. Therefore, Chongqing Light Rail is allowed to carry liquor, but it must comply with relevant regulations.