This question was easy enough to explain. The mechs Feng Jun provided to Xia Nation were all models used by the Human Federation military.
Mechs with cabins were used in space combat and could also rescue comrades in space.
Mechs without cabins were ground assault mechs, primarily designed for charging attacks. They could fly, but lacked rescue capabilities.
The one Feng Jun used, meanwhile, was a City Defense Army mech and bore obvious military characteristics.
Of course, that did not matter to him. He had acted in time, and what he had actually used was a cultivator's spiritual energy. Otherwise, his command of the mech truly would not have matched those military elites.
Ultimately, he had still been planning to serve as a safety net. If either side made a mistake in their response, he really would not have intervened in time—only bloody lessons counted as lessons. Forgiveness without limits... that was the stuff of romance dramas!
Both sides had made some mistakes, but they were understandable. The employee had insisted on shutting the door before leaving, which was a rare quality—perhaps he had personal reasons, but fundamentally, he had been trying to save public property.
The mech's mistake was even easier to understand. It had crushed someone's arm, then instinctively loosened its grip... anyone could make that kind of mistake.
So Feng Jun directly put on a mech and went forward to save the man.
In any case, only the military knew the finer distinctions between mech models. Ordinary people would find it hard to tell at a glance. The reason he had worn a mech over there was also because he did not want people in the oil industry to notice anything unusual about him.
The military had already noticed that something was off about him, but the