The attached drawings should be the drawings that can best illustrate the main technical features of the technical scheme of the invention or utility model as abstract drawings (the invention without instructions does not need 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 designate an ex officio member. In addition, the appended drawings of the abstract, like the abstract, are only used for patent information retrieval and have no legal effect.