Chen's first thought as she settles her feet upon the ship is...well actually her first thought is that that those shiny golden dragons are extremely effective for confusing an attacker because of the way they weave about and reflect the light. Someone rushing at Qiu would find herself dazzled and it would be hard to keep her eyes focused on any one body part. 

Once she resists the initial urge to rush into a duel (it helps that Qiu is boasting and not pushing for the fight) her first thought is that the dress is really really hot. That red dress shining with gold as the blue waterfall rushes past it with each move of Qiu's arm. It flexes and Chen imagines herself being held down by that waterfall bicep, pressing up on her stomach and into her chest. 

She blushes, tries to hold onto her bag and her canvas all at once, and takes her eyes off her opponent. She's not...she can't, the scandal if Qiu were to kidnap her alone, both her mother's would be furious! They'd never let her go outside again. B-besides, there's no way the favor that Qiu wanted was anything like t-that. So she tries to put that out of her mind, ignore her own flush (it's just because she got switched from cold climate to warm climate all at once!) and look back up at those beautiful serpentine eyes and that tail luxuriously curled around a slender glass like it could be curled around her waist and slipping down to tickle her legs. Oh...gosh.

"I um...I do, I mean, I want to. T-to do you a favor! Of course!"

[Chen will take the XP and do what Qiu wants. She is also Smitten, but it could never work because they're opposing princesses and Chen's mothers would both never allow it the second they found out.]