When i had smashed my engine exhaust part, shum's auto clinic was closest one i could found..He was very helping and fixed only for running condition. So after 4 month or something, i finally gathered some money to fix other stuff i didn't fix. I went there and shum was like totally different person. He was very nice and happy person but when i get there, he was acting like very shy looked totally different..he was like stepping back, never looked at me, and didn't remember me, he didn't say a word(not even ""hi""). i tried to explain who i was to shum but..I will never go back there to fix anymore.