It is very good. I just made a few minor changes and have added them below. Christmas in western countries is equivalent to Chinese New Year.They are both celebrations of the end of the year.Christmas and Spring Festival express people's expectations for a better life. ----- I changed "all celebrations" to "both celebrations". When you are referring to just 2 things as you are here, you use "both". If it were more than 2 things, then "all" would have been ok. ----- People celebrate Christmas and Spring Festival in the coldest season of the year.

Western people eat turkey and drink wine on Christmas Eve.The biggest event of Chinese New Year's Eve is the annual reunion dinner. ---- "the annual dinner" and not "annual dinner" is needed here. ---- People eat dumplings in northern China.Chinese people paste spring couplets on the two sides of the door frame.Western people celebrate the Christmas Day with family and friends.In China,we spend the spring festival with our family members. --- "on two sides of the door frame" sounds just a little awkward. It sounds better if you say "the two sides of the door frame". Alternatively, "both sides of the door frame" works as well.