Why is Christmas Eve not a holiday tradition in China?

Because it's a Western holiday, there is no tradition of celebrating it in China. Cultural tolerance and national self-confidence exists or not, has always been a Western holiday has been much discussion of the topic, over and over does not seem to become an either/or problem, every time behind the scenes is also thought to reflect some of the values of the color.

Peace, that is, no accident, no danger; smooth and safe. It is a metaphor for those who have taken risks without suffering damage or loss; it also refers to a calm and stable state of mind. The New Sayings of the World - Literature: "All are free of thoughts and causes." (《世说新语》-文学), "All are free of thoughts and causes". Liu Xiaobiao? Note: "Zhou Li" has six dreams: one is said to be dreaming, said nothing touched, peace and dreams." Tang Cen Sen "Feng into the capital" poem: "meet on the horse without pen and paper, by the gentleman to pass the word to report peace."

Reference: Ping An (Chinese word)_Baidu Encyclopedia