Enough said, it all comes down to the simple logic of cake.
Of course, this is also related to the fact that the combat power of an Empire Mecha warrior piloting a mecha of the same level has always been higher than that of a Federation Mecha warrior.
But no matter what, someone like Aida Kang, an Empire Prince, as well as the slice of cake he represents, cannot be overlooked by the Martial Emperor and snatched away by the Federation.
Long ago, during the battle at Vulture Mountain, Ji Xinghe had once unleashed the Cutting Heart Blade, revealing the conflicts of interests between the Empire Royal Family and the Empire nobility, as well as between the old and new nobility.
Simply put, if you're not willing to exchange even your own brother, Aida Kang, after his capture, and even reclaim his fief after his death, what would happen to us if we were captured? Wouldn't it be even worse?