Zhong Tianlang, after a remarkable display of his prowess, felt extremely pleased with himself and led his army southward. After he departed, Zheng Fan had Liang Cheng lead five hundred cavalry in a purely symbolic pursuit.
Liang Cheng understood the situation and didn't advance recklessly, as he also had to guard against the silver-armored general launching a surprise counterattack. In any case, the Qian cavalry were ahead, with Liang Cheng's men "escorting" them from behind, applying just a modicum of pressure.
This scene was very much like when Zheng Fan had returned from Qian State, with various Qian cavalry units escorting him along the way.
There's a military maxim: "Do not attack a retreating army, and do not pursue a cornered foe."
