He couldn't pursue, but he couldn't not pursue either.
This wasn't the first time Yang Cong had been met with an awkward situation like this in a match where no matter what he chose, it wouldn't help. Was there a third option? Yang Cong didn't know. Perhaps there was, but he couldn't see it, so he could only pick one of two actions. Even if neither option was optimal, he had to make a choice. For every moment he hesitated, the worse the situation became.
After her!