When Di Tou was still a good distance away from Qian Jian Shan, perhaps… ten thousand kilometers or so, Di Tou began releasing his presence. Not in an overbearing way, but just enough so that anyone who so desired would find him. Sort of like a radio station! Without the proper gear, you wouldn't even know there were radio waves being broadcast.
At the same time, although Di Tou didn't slow down to an extreme state, as ten thousand kilometers would take an awfully long time to traverse at a normal rate, he indeed moved quite slowly and at an even pace, neither speeding up or slowing down, progressing about two thousand five hundred kilometers an hour, all in all giving Qian Jian Shan about four hours to prepare and anticipate his arrival.