巴掌 (bā zhang): Slap (Noun) — Meaning & Stroke Order

He was so angry that he slapped himself hard, filled with deep regret.

In formal mediation, any physical conflict, including slapping, is strictly prohibited.

Don't you think that solving problems with a slap is an extremely childish and ineffective way?

He did not fight back, but silently endured that resounding slap.