最流行的问候语是什么？ [。*。]再会！ 您能告诉我关于问候的话题吗？ 我特别想知道哪种问候语在全世界人们中最受欢迎。 是传统的握手、温暖的拥抱，还是礼貌的鞠躬？ 问候语的受欢迎程度是否因文化或地区而异？ 此外，这些年来最流行的问候语有什么显着的变化吗？ 我渴望更深入地了解人类互动这一迷人的方面。

Good day! Could you please enlighten me on the topic of greetings? I'm particularly intrigued to know which greeting is the most popular among people worldwide. Is it a traditional handshake, a warm hug, or perhaps a polite bow? Does the popularity of a greeting vary by culture or region? And furthermore, have there been any notable changes in the most popular greeting over the years? I'm eager to gain a deeper understanding of this fascinating aspect of human interaction.