Yi 揖, aka fist-and-palm gesture, also known as gongshou 拱手 [cupped hand], is a traditional Chinese ceremonial gesture or salute used for greeting or showing respect. It involves bringing together the index finger, middle finger, ring finger, and little finger of both hands, with the palms facing inward or downward and the thumbs of each hand interlocking. One hand is placed over the other, and generally, the left-hand covers the right one for men and is reversed for women. There are different variants depending on conditions, such as gender, occasion and relationship between the individuals. Additional hand and body movements such as bowing may be used with the gesture (Wikipedia).
Image of two men greeting each other with the gesture of yi.