Incorporating army planes and pilots is not as simple as Xia Fei thought; he nods, and Gallieni immediately accepts them.
The reality is exactly the opposite of what he imagined, as Gallieni repeatedly refuses:
"I'm very sorry, Commander-in-Chief. We are already struggling to command a flying unit and truly cannot absorb so many planes and pilots as it is beyond our capacity."
"Moreover, these planes are different from the models used by the First Flight Brigade. Hastily incorporating them may cause confusion."
"Your pilots are also trained under different systems; there will be conflicts in training directions and combat concepts!"
"Yes, I worry they are accustomed to your combat mode and cannot integrate into Shire's combat system."
...
Implicitly, it means Xia Fei's lost battle mode doesn't deserve to join Shire's victorious army.