After a difficult day, Wufei wanted a safe outlet to fight and know he wouldn't actually do any harm unintentionally. With Treize... he could. And Treize understood that and worked to help, even if the methods were often unusual.

He eyed the thin toy. Ah. Distraction. He still fought to keep his leg flat, not that it ever worked against Treize and soon enough that leg was bent, exposing him to what the former general had in store for him.