F4 / watercolor paper (Wagman 350) wax, ink, white paint, charcoal, charcoal pencil 2021.1.11 Wind is created by the difference in air pressure. The atmosphere is said to weigh 20 tons per square meter, but it is hard to realize. Since I got into the habit of sleeping in a hammock, sometimes when I sleep in bed, I have a hard time sleeping as if my body is crushed. At this time, I feel the weight of the atmosphere a little.