This is a special candy appeared on Tết. 

Bánh Tét is made from sticky rice, bean, banana or meat. My parents made for me a tiny cake when I was young.

The flower is displayed all Vietnamese Family on Tết because of the lucky and longevity.

Hoa Mai is a featured flower in Southern Vietnam on Tết.

I expected to eat watermelon because it only appeared on Tết.