Every country has its dignity. In the face of threats and defeat, the ruling party must consider the aftermath. Once conflicts become public, the ruling party, for its dignity, cannot compromise; it is a matter of principle. Instead, it will send more troops, using various severe methods to retaliate and avenge. Luo Zheng knows the strength of the Hook Tribe, which cannot withstand the crazed retaliation of various countries, so the best approach is to handle things discreetly.
If the situation is not made public and is only circulated within a certain scope, ruling parties of various countries will grit their teeth and accept defeat to quickly handle the aftermath and allow prisoners to return. After their return, they can send troops to attack and reclaim dignity. This way, both face and substance are maintained. Ignoring the life and death of prisoners would chill the hearts of the warriors, a loss the ruling party cannot afford.