Diplomatic protocol and established norms between major powers drive the near-certain trader consensus against any physical greeting beyond standard handshakes at US-China summits. Formal bilateral meetings follow strict ceremonial guidelines emphasizing restraint and national dignity, with no historical precedent or recent signals indicating deviation for leaders in these roles. Public optics, alliance sensitivities, and institutional traditions further reinforce the low likelihood of unusual gestures. While late developments such as private scheduling changes, health-related accommodations, or unprecedented personal rapport could theoretically shift dynamics, they remain remote possibilities that have not altered the current implied probability.