I've never owned a Shar Pei, so all my experience is with other people's dogs in training or boarding at facilities. I had one good friend of my family who had one, I never met her but reportedly the only one I have ever had the pleasure of knowing about that wasn't somewhat of a nasty temperamented dog.
They are definately not a "Golden-type" personality. They are aloof, to the extreme (it is in their standard as somone said, aloofness is also in the GSD standard but you don't see that quality often in the breed). Aloofness means the dog won't do much around an invited stranger but show some mild interest. No attention seeking and no laying lovingly at a guests feet. I actually like that trait in my own dogs. That natural aloofness can lead to some issues if the dogs are not socialized correctly. A naturally aloof dog isn't going to accept people unless they are super socialized because they aren't interested in strangers in the first place.
Aggression is an issue in the breed, and I have seen lots and lots of them. I think its more of a problem of people NOT respecting a dog that acts aloof -- most Americans can't stand when a dog doesn't fall all over them upon meeting. We tend to invade space of dogs and push ourselves on them if we don't get the "right" response when meeting a dog. So the Shar-pei is misunderstood a lot of times and that gets us in trouble and they WILL bite when pushed too far. I don't know how many times I have seen this situation: Shar Pei comes in for boarding at a facility. Dog is aloof but not aggressive in his/her kennel. Kennel staff insist on petting the dog. Dog bites kennel staff. See? we just hate it when a dog doesn't look at us like a fast friend upon first meeting lol.
I have handled a lot of them. Its not a dog I have ever had interest in for various reasons, but many people fancy them a lot! I think to own a Shar-Pei is to know a Shar-Pei. Just doesn't strike me as a breed that you'd get to know well unless you know one really really well.
They are definately not a "Golden-type" personality. They are aloof, to the extreme (it is in their standard as somone said, aloofness is also in the GSD standard but you don't see that quality often in the breed). Aloofness means the dog won't do much around an invited stranger but show some mild interest. No attention seeking and no laying lovingly at a guests feet. I actually like that trait in my own dogs. That natural aloofness can lead to some issues if the dogs are not socialized correctly. A naturally aloof dog isn't going to accept people unless they are super socialized because they aren't interested in strangers in the first place.
Aggression is an issue in the breed, and I have seen lots and lots of them. I think its more of a problem of people NOT respecting a dog that acts aloof -- most Americans can't stand when a dog doesn't fall all over them upon meeting. We tend to invade space of dogs and push ourselves on them if we don't get the "right" response when meeting a dog. So the Shar-pei is misunderstood a lot of times and that gets us in trouble and they WILL bite when pushed too far. I don't know how many times I have seen this situation: Shar Pei comes in for boarding at a facility. Dog is aloof but not aggressive in his/her kennel. Kennel staff insist on petting the dog. Dog bites kennel staff. See? we just hate it when a dog doesn't look at us like a fast friend upon first meeting lol.

I have handled a lot of them. Its not a dog I have ever had interest in for various reasons, but many people fancy them a lot! I think to own a Shar-Pei is to know a Shar-Pei. Just doesn't strike me as a breed that you'd get to know well unless you know one really really well.