"Day of Peace, my old friend!" The civilian historical explorer Re Du enthusiastically shook Yang Pingtie's hand, shaking it vigorously up and down like people from the old days.
Honestly speaking, it's not very polite.
From an evolutionary psychology perspective, a "handshake" might represent both parties showing "I have no weapons in my hands," while also controlling the other's potential weapons for attack, symbolizing "mutual trust." But the emergence of cyber martial arts has infinitely expanded the disparity in individual combat power. Early heroes often infiltrated gatherings to assassinate crucial figures replaced by usurpers. It's said that the Martial Ancestor could shatter a low-modification person's head with an inconspicuous "handshake" motion in the shortest time. During that era, the "handshake ritual" gradually became taboo as humans sought older forms of etiquette that did not require actual touch.
