2. Time for provincial semi-finals: 202 1 in late May.

3. Time of national research activities: August 202 1 (summer vacation), the specific date will be announced separately.

4. National research activities and commendation activities: August (summer vacation) of 20021.

1, "China Cup" is the only national mathematics competition that has been strictly selected in three rounds: preliminary competition, semi-final competition and final competition.

2. "China Cup" is the only series of math competitions with multiple supporting activities. Including the national finals, the "China Cup Classic Competition across the Taiwan Strait" and the "China Cup Winter Camp".

3. As the most authoritative primary school mathematics competition in China, Huabei has been recognized by key middle schools in Beijing.

The initial test time of China Cup is short, the number of questions is small, the difficulty is low, and the difficulty gradient is small, so the average score of the test is high, and the score of entering the semi-finals is also high.

However, due to the wide gradient, great difficulty and many types of questions, the final exam of China Cup takes a long time (one and a half hours). However, the China Cup has the highest gold content, the most stable entrance guarantee, the highest level of competition questions and the largest final. "China Cup" is one of the major events that outstanding primary and secondary school students must participate in, key middle schools must pay attention to and junior high school students must refer to.