According to the "Implementing Rules for the Patent Law of the People's Republic of China"
Article 18 stipulates that several drawings of an invention or utility model shall be drawn in accordance with "Figure 1, Figure 2 ..." sequential number arrangement.
Reference signs that are not mentioned in the written part of the description of an invention or utility model shall not appear in the drawings, and reference signs that do not appear in the drawings shall not be mentioned in the written part of the description. The reference signs indicating the same component in the application documents shall be consistent.
In addition to necessary words, the drawings should not contain other annotations.
And the drawings must be: mechanical drawings; six views or flow charts, not blueprints
If you want to apply for an invention patent, it is recommended that you find a professional agency. , because after the application is submitted, if it is deemed to meet the requirements of this law after preliminary review, it will be announced 18 months from the date of application. After publication, you have to submit a substantive review within three years. If you are deemed unqualified after the substantive review, you will be issued a "Notice of Examination Opinion" to notify you to respond. If the defense is unsuccessful, it will be rejected. Even a relatively smooth invention patent application will take 1 to 3 years to be authorized.
It’s quite troublesome, so I suggest you find a professional.