new chi

:wave: hello I am new to this site and I just recently received a 3 month old male chi for Christmas. I had a gorgeous cream long haired male over a year ago but when we lived in town my son let the door open and he bolted across the street and was killed. I was devastasted and realized just how much I loved him when he was gone. I had never been a pet person and somehow he changed my life. Now I own a daschund/chi mix and my new 3 month old male who's name is scrappy. My question is this.. He was kept outside in a kennel and since I got him he is not very socialable. He acts like he's afraid of being hit or hurt or something He wont come to you and runs,etc.etc. but when he is with my other dog named scooby he acts like a playful little dog? If he is kennel shy and hand shy how long does it take to rehabiltate him to being playful with me and my family? Also, needing advise on floppey ears. I just started keeping him on a leash beside me at all times and it seems to be making some progress. if I have been keeping him crate trained every nite why does he still eliminate in his house anyway? Does the litter box training work well and how? My last chi was a nightmare to potty train.