At the department's annual work summary meeting at the beginning of the year, Liu Chaoyang, an employee of the Conference Service Center, put forward a rationalization proposal that the use of fully automatic controlled dolphin underwater vacuum cleaners can reduce the daily discharge of water in the swimming pool, which was adopted by the hotel's senior research and decision. After the equipment was purchased, Liu Chaoyang took the initiative to study and study the use of this new equipment (which no one had ever touched before). After a period of serious exploration, he finally mastered the operation method, which not only ensured the cleaning effect, but also reduced the work of the staff. burden.