Fang Qingze had invaded the Liu Family stronghold simply to stir up trouble, steal intelligence, and see if he could take out a few Liu Family members along the way.
To put it bluntly, he was there to play the role of a "troublemaker" and throw the Liu Family's internal defenses into absolute chaos.
Although Fang Qingze was slightly displeased that the Ye Family and the Federation had used him as bait, actually using artillery shells to blast the Ye Family's troops would mean doing the Liu Family a favor and screwing over his own people.
Chapter 270