So, he began to follow behind them using only his Super Speed ability, which of course couldn't match up to the speeds that the beasts being rode on were moving at. However, he didn't lose sight out of them as he was still able to see them, hear them and smell them from far away using his powerful, enhanced senses.
About a few hours later of chasing after them at the highest speed that he could muster, using his Super Speed ability and his augmented vampiric senses to trace them to their location, he eventually arrived at an old and abandoned building that had no windows as long pieces of wood have been used to seal them up.
At the moment, the beasts that the masked assassins rode on, could be seen seated idly outside the deserted building. While Xiao Lin who didn't want to show himself to the beasts and possibly cause them to cry out and instantly alarm the assassins that he was after, decided to remain far away from where he would be noticed by any of the beasts.