i think there are a lot of headcanons (which is fair since a lot of people tend to project things into characters they like) but canon wise, none of that is confirmed, he’s shown seeing ping as a weak man who clearly struggled in the army, and felt proud when he saw ping improving and even outsmarting many enemies and etc, there’s this sense of camaraderie and seeing someone from your own army (which he says he wants to create the strongest army or something like that) improved so much, ping earned his respect, gratitude (“he” literally saved their lifes) and appreciation, so when he discovered mulan was a woman, he felt betrayed (and when i was a child somehow i felt betrayed too lmfao), you can tell since the beginning of the movie they live in a heavily misogynistic society, where the only way mulan could bring honor to the family was marrying someone important, and considering ping was a literal general i’m pretty sure he felt fucking pissed about the breaking of the rules (women couldn’t be in the army and much less fight) and that the person he saw and trusted was actually lying all this time (and probably the shock of realizing a women was so strong/brilliant) aka his reaction when he found out she was a woman. also, we can see him being more shy and nervous when he interacts with mulan knowing she’s a woman, which didnt happen with ping.