Everyone has fun on New Year's Eve (除夕) . Here is what people like to do around the world. In Greece (希腊) , they make a special cake. In the cake, there is a coin (硬币) for good luck. In South Africa (南非) , they play the drums. They sing and dance in the street. They are very happy. In Spain, people want to be happy in the next twelve months, so they eat twelve grapes in twelve seconds (秒) on New Year's Eve. Chinese New Year comes in January or February. People watch fireworks in the sky. The sky is so beautiful. They eat jiaozi on New Year's Eve.
Why people eat twelve grapes in twelve seconds on New Year's Eve in Spain?