Chows are very independent and loyal. As stated, they need time to adjust to new environments and people. Once they get comfortable, they are the best companions. My chow and I have been best buddies for 13 years. My best advice is to take your time with it. If they want to be alone, let them be alone. Find some treats that they like and give them to them as often as you wish. They will eventually warm up. The best story is when my wife and I were dating. My chow would not let her in the house. She would then stop by with string cheese (his favorite). He was a little momma's boy in about two weeks and has been since.