When greeting someone, you can shake hands or use other gestures depending on the culture and context^{1 5 2 3 4}.In Thailand, for example, people offer a "wai" by placing their palms together at chest level and bowing. You should return the gesture¹.In the US, people generally prefer a firm grip and a perceptible shaking two or three times from the elbow, not the shoulder, but not pumping⁴.In most social and professional scenarios, the handshake is considered a standard greeting⁵.