The mathematics competition of senior high schools in Henan province is different from the national mathematics competition of senior high schools. Organizational units are also different. The former is sponsored by the teaching and research section of Henan Provincial Education Department, and the teaching and research sections of local education bureaus are responsible for the registration, examination and marking of papers. The examination time is usually the first Sunday in mid-May every year. Students generally register in April each year, and the school organizes collective registration. The specific deadline for registration varies from city to city.