2. According to the patent examination guidelines, if there are drawings in the specification, the applicant shall submit the drawings that best illustrate the main technical features of the invention technical scheme as abstract drawings. The attached drawings shall be one of the attached drawings in the specification. If the applicant fails to submit the appended drawings, the examiner may notify the applicant to make corrections, or appoint a person ex officio, and notify the applicant. If the examiner confirms that there are no suitable abstract drawings to indicate, he may not require the applicant to make corrections.