politeness is necessary in our life ,not only could it promote people's personal connotation ,also it gives us a direction to develope.
though China has already got many achivement in different fileds,but the lack of politeness seems serious to all Chinese.only after the politeness prove that we have way better China we could say it's less necessary .but actually,we still have a long path to get through.
so ,to be frank,politeness in our life is essential.