Lunar New Year is ( The noun phrase very important festival" seems to be missing a determine before it.) a very important festival in my hometown. The reason is that we should ( It appears that the form of the verb "prepare" does not work with "be" in this sentence.) prepare many in Lunar New Year and Spring Festival. First is Spring Cleaning, ‘’out with the old, in with the new’’ this is necessary cleaning on Lunar New Year before. Because it drives away misfortune and welcomes ( It appears that the subject pronoun "it" and the verb " welcome" are not in agreement. Consider changing the verb.) good luck things come in. The second (It seems that there is an article usage problem here.) is put up ( It seems that preposition use may be incorrect here.) in spring couplets, usually, it is auspicious words such as happiness, longevity, wealth, etc. It is posted on both sides of the gate or the wall. ( It appears that the preposition "on" is redundant. Consider removing it.) The mean is that they wish to (It appears that the verb get should be in the to-infinitive form. Consider adding the word "to".) get good things in New Year. The last one is to enjoy the reunion dinner, this is like Christmas day. Family members will be come back to their hometown together to eat dinner.

Lunar New Year is a very important festival in my hometown. The reason is that there are many preparations to be made for Lunar New Year and Spring Festival. First is Spring Cleaning, ‘’out with the old, in with the new’’. It's necessary to clean before the New Year because it drives away misfortune and welcomes good luck. The second is to put up spring couplets. Usually, it's auspicious words such as happiness, longevity, wealth, etc. It's posted on both sides of the gate or the wall. The reason is that they wish to invite good things in New Year. The last one is to enjoy the reunion dinner; this is like Christmas day. Family members will come back to their hometown and eat dinner together.