Harbin primary school has a six-year system. Official website, Harbin Municipal Bureau of Education Obligation, introduced that the academic system of nine-year compulsory education in China is six years in primary school and three years in junior high school, or five years in primary school and four years in junior high school, and the two periods are combined into one "nine-year consistent system". In the compulsory education stage of Harbin, the May 4th system was implemented in six main urban areas, and the "63 system" continued in 12 district (county and city). Harbin compulsory education should be unified to the "June 3" academic system; Select the main urban areas with conditions to carry out pilot projects first, conduct investigation and research, form a unified work plan of "63 system" and "54 system" of compulsory education in Harbin, formulate relevant policies, and implement the responsible subjects; The research teaching content of the teaching and research section should be readjusted and the teaching plan should be arranged scientifically; Conditional cities should gradually implement the nine-year compulsory education system, accelerate the pace of urban basic education curriculum reform, adapt to the needs of educational development, and improve the quality of education and teaching. Harbin, also known as Ice City, is the core city of prefecture-level cities, provincial capitals, sub-provincial cities, mega-cities and Harbin-Changsha urban agglomeration under the jurisdiction of Heilongjiang Province, an important central city in the northeast of China and an important national manufacturing base approved by the State Council.