Happy Birthday!
Asminha!
Today, you are 21.
In Chinese tradition, each person is born in one destined year, which is named mouse, or cow, tiger, rabbit, dragon, snake, horse, sheep, monkey, chicken, dog, pig. And according to our calendar, you are born in the year of Cow, so I would call you a cow.
and Cow has another good meaning in China, it means good chance, excellence, outstanding and superb.
we say, somebody is cow, that is to say, s/he is glorious!
you should learn that word 牛(niu).
Asminha is cool!(阿诗玛很牛！Ashima Hen Niu!)
I teach you some Chinese