Ni hao is the standard Mandarin greeting meaning hello, and short clips of the phrase circulate widely on soundboards, in memes and in short-form video because the words are easy to recognise and fun to repeat. Creators often use it as a quick, friendly opener, a reaction to a Chinese-themed clip or a light-hearted way to greet an audience without a long introduction. Its appeal comes from that instant familiarity: even viewers with no Mandarin recognise the sound of hello, which keeps the clip useful across travel, language-learning, comedy and reaction content long after any single trend fades.