A Very Strange Xin Zhao Player

Where to begin I played a nasus game yesterday and i ended up going top, last pick insta locks xin Zhao and says top mid and bot with ghost tp. entering the game i tried to stack as much as i can and he left lane and roamed. After coming back he picked up first blood on riven and kept roaming mid and bot picking up many kills. He came back top and took the outer and inner turret before roaming again and again. (Sorry for the bad english).