Very few dogs have the outstanding qualities necessary for breeding. Each puppy you produce should be an improvement over the parents. Read the standard for Chinese Shar-Pei and show your dog in competition to see how it measures up to others. Research the common health problems in your breed and discuss testing for genetic defects with your veterinarian. Many cities are considering expensive fees and licenses for keeping unneutered dogs.
Dogs recover from spaying or neutering in about a week, with minimal discomfort.
Speak with your veterinarian or a reputable breeder about your concerns and the benefits described above.