How do you say happy new year in chinse?

新年快乐 xin nian kuai le

The Traditional Chinese for "Happy New Year" is 新年快樂。 In Simplified Chinese, this is 新年快乐. It's pronounced "Xin1nian2kuai4le4" in Hanyu Pinyin, and in Gwoyue Romatzyh it's pronounced "shinnian kuayleh."

Gaung hey faut choy is what you say when you want to say Happy Chinese New Years in Cantonese, in Mandarin, can't remember exactly, but it sounds almost alike, people who speak it would know what you mean too.