Quality development, also known as outward bound training, originally meant that a small boat left the quiet harbor and plunged into an unknown journey without hesitation, to meet challenges again and again, to overcome difficulties, to hone its own quality, and to enhance the happy energy in its mind.

Quality development and outward bound training has been established in the 1940s, expanded in the 1950s, developed by leaps and bounds in the 1960s, stabilized in the 1970s and internationalized in the 1980s. At present, nearly 40 schools have been established on five continents, with their headquarters in the UK, which is the center of global outward bound training activities. Exit training emphasizes safety first and advocates environmental protection. Its declaration is: inspire self-esteem, care for others, serve the society and promote environmental protection.

On June 5, 2022, the General Office of the Ministry of Education issued the Notice of the General Office of the Ministry of Education on Doing a Good Job of "Double Reduction" during the Winter Vacation, which clearly stated that during the Winter Vacation, it is necessary to strictly prevent offline discipline training institutions and preschool children's training institutions aged 3-6 from illegally carrying out offline discipline (including foreign languages) training, and non-discipline training institutions from carrying out disciplines beyond the scope in the name of "quality development" and "thinking training".