How many fingers do you use to feel the pulse?

Many careful people will find that Chinese medicine uses three fingers when taking the pulse. Why use three fingers? This is special because it corresponds to the triple focus of the human body. The following is an introduction about triple energizer of human body:

The human body is divided into upper, middle and lower parts. The upper jiao represents the heart and lung, the middle jiao represents the spleen, stomach, liver and gallbladder, and the lower jiao represents the kidney and bladder. Therefore, it is reasonable for Chinese medicine to take three fingers as the first pulse. From beginning to end, the pulse is called Cunbu, Guanbu and Ruler in TCM, and the index finger is Cunbu, corresponding to the upper jiao; The middle finger is off, corresponding to the middle focus; The ring finger is a ruler, which corresponds to the lower focus. There is also a difference between left hand and right hand. The inch, clearance and ruler of the left hand represent the heart, liver and kidney respectively. The inch, clearance and ruler of the right hand represent lung, spleen and kidney respectively.