At that expense, and the risk of feeding your people the same thing for days in a row? You're bluffing.

[... Unless he's planning to have the cooks make meals just for Kratos, which is still an absurd waste of time. Even still, Kratos eyes Yuan warily as he's uncuffed, and then sits up to proceed with the day's plans.

[Two weeks later, he's regretting his challenge. The scene is not much different: Kratos had escaped the night before, in protest, so he's handcuffed this morning. He's awake again as Yuan enters, but has his eyes closed; and it's not until he hears Yuan's footsteps that he says:]

I admit, I underestimated the depths of your pettiness.