Huawei Cup National Postgraduate Mathematical Modeling Competition is a competition sponsored by Huawei, and the specific check time will depend on the arrangement of the competition. Generally speaking, after submission, the participating papers will enter the review stage, and experts will review them to determine the quality and innovation of the papers. After the review, the organizer may check the papers to ensure the independence and originality of the participating papers. Normally, the duplicate inspection will be carried out after the evaluation is completed, but the specific time can be referred to the competition notice or the relevant announcement on the official website. So when to check the weight, it is best to consult the organizer or wait for the official announcement.