How to draw the appended drawings of patent application specification

According to the review guide, part I, chapter I, 2? 4. The drawings in the instruction manual shall be drawn with drawing tools and black ink, and the lines shall be uniform, clear and deep enough, and shall not be colored or altered. The section line in the section drawing shall not hinder the clear identification of the reference mark line and the main line. How many pictures can be drawn on a piece of paper? A master plan can be drawn on several drawings, but it is necessary to ensure that the drawings on each paper are independent. When all the drawings are combined to form a complete master plan, they do not affect each other's clarity. There should be no border around the drawings. If there are more than two drawings in total, they shall be numbered with Arabic numerals and preceded by the word "Figure", such as Figure 1 and Figure 2 ... The drawings shall be drawn vertically on the drawings as far as possible and clearly separated from each other. When the horizontal dimension of parts is obviously larger than the vertical dimension and must be arranged horizontally, the top of the drawing should be placed on the left side of the drawing. When there are more than two drawings on a page, and one of them has been arranged horizontally, the other drawings on the page should also be arranged horizontally. Reference numerals shall be numbered with Arabic numerals. The same reference numeral shall be used when the same part appears in different drawings, and the same reference numeral shall be used in all documents (specification and drawings, claims and abstract) of a patent application, but it is not required that the reference numerals in each drawing are continuous. The size of the attached drawings should be appropriate, so that every detail in the attached drawings can be clearly distinguished, and it is suitable for batch reproduction by means of photographic plate making, xerography, microfilming, etc. The same drawing should be drawn at the same scale, and a local enlarged drawing can be added to make a part show clearly. The appended drawings shall not contain other notes except necessary words. The text in the appended drawings should be Chinese, and the original text can be marked with brackets if necessary. Flowcharts and block diagrams shall be regarded as attached drawings, and necessary words and symbols shall be given in their boxes. Under special circumstances, photos can be attached to the drawings as attached drawings. For example, when metallographic structures or tissue cells are displayed.