2. Heating makes mesophyll separate and corrode evenly.
3. When the leaves change color and the mesophyll is crisp and rotten, it is in clear water. 4. Brush the front and back of the blade to expose the white texture. Put it in 3% hydrogen peroxide for 24 hours, turn it into pure white, take out the leaves, wash them and dry them.
5. The veins are pressed dry in old books.
6. Apply watercolor paint on both sides of the vein with a brush.
7. Its petiole is tied by a colored silk thread. ?