Discussion of 打招呼 [dǎ zhāo hu] greet, say hello to, poke (social media) - Trainchinese

1 - What are the different ways to say “hello“ in Simplified Chinese? (dǎ zhāo hū (打招呼))探讨在简体中文中表达‘你好’（打招呼）的多种方式。