Does the subject want to ask "How difficult is the preliminary contest of number theory in Zhou Chunli junior middle school mathematics competition"? It's hard.

1, A Preliminary Study on Number Theory in Junior Middle School Mathematics Competition is a book published by China Materials Publishing House in 2004, written by Zhou Chunli.

2. The elementary number theory in junior high school mathematics competition is a natural extension and expansion of junior high school students' integer knowledge, including integer and divisibility, deepening of divisibility knowledge, remainder problem and elementary indefinite equation. Through the classified explanation and practice of integer problems in junior high school mathematics competition, we can consolidate basic knowledge, develop logical thinking ability, understand mathematical thinking and cultivate innovative consciousness.

3. Zhou Chunli, Professor of Mathematics Department of Capital Normal University, Senior Coach of China Mathematical Olympics. 1978, has served as director, executive director, deputy secretary-general and deputy director of the popularization Committee of Beijing Mathematical Society. He is one of the founders and the first vice president of Beijing Mathematical Olympic School.