What does it mean for the old man to feel his pulse?

Take the pulse. Pulse pressure refers to pressing the blood vessels on the skin with your fingers, and then suddenly letting go to see if the blood in the blood vessels can be quickly replenished into the blood vessels. Pulse compression is usually used to measure the blood flow of arteries in fingers or wrists. By observing the blood supply in blood vessels, the elasticity and blood flow of blood vessels in this part can be obtained.