(Pinyin for the blessing above: niu nian dao le, ni shuo de shi niu hua, ban de shi niu shi, fa de shi niu cai, zou de shi niu lu, kai de shi niu che, jiao de shi niu you, peng de shi niu yun, zong zhi 2021 ni zui niu!)
In Chinese “牛(niú)” is cow/ox but is also used as a slang to express awesome.
So basically 牛 = 厉害(lì hai)
For example you can say “你最牛(nǐ zuì niú)” which means “you are the best”.
(You may also have heard people say “牛逼/牛B(niú bī)” which is equal to “fucking awesome” in English. But this is a very informal expression so don’t use it towards everyone haha )