will I face some problem because I get my nose fix after getting China visa?

Hi, I would like to ask if .what if I am planning to get my nose fixed. (rhinoplasty surgery) but I already got visa going to beijing and my passport shows the old pictures of me.. What documents do I need to bring? and Will it affect my my visit in beijing . Im afraid immigration personnel will hold me in the airport since they might think I am different person in the passport picture. What do I need to do .Hoping for your immediate response Pls...