Finding Tailoring Store in China

I'm seeking someone in China who can assist me in finding a good tailoring store to customize some clothes. Your role would involve the following :
- Finding a good tailoring store that can provide excellent custom tailoring services, especially making pants smaller or bigger (size alteration)
- You will receive some clothes
- You will take them to the tailoring store
- You will explain my request to them
- You will keep coordinating between me and the tailoring store
- Once the store finishes working, you will collect the clothes again and send them back to me