I am a sucker for hurt comfort so my current thoughts about them are just circling around the thought of Jiaoqiu rushing to the bedside of General Feixiao and spending hours in a kitchen after that making medicine after medicine to treat her becuz he knows she'll want to go back to the front lines and he won't be able to stop her so might as well make sure she's strong enough to come back.
Him pressing his ear to her chest to make sure her heart beat is stable, his ears down turned the entire time as he feeds her medicine and holds her hand through the delirium. Towards the end of their time, he takes time to read her reports to her and let her bounce her plans off him while he helps her put back her armour on the day she's leaving back for war.
Imagine him tightening her gauntlets and then bringing her iron clad claws to his lips. Neither say a word, they're still just General and Advisor/her personal medic, "For good luck General, please return safe." And she bows politely and leaves with her weapons... (And maybe when she comes back she returns the kiss asking him to stay by her side...)