It's weird how often those two archetypes get paired. Not even in a shipping way, though that happens plenty too—it's more about the dynamic itself being this perfect engine for conflict and, eventually, understanding. The jade is cool, controlled, often older or more experienced, carrying that polished distance. The cat is all instinct, curiosity, and chaotic affection, poking at the jade's flawless surface until something cracks.
You see it everywhere once you start looking. Lan Wangji and Wei Wuxian from 'The Untamed' are the textbook example, with Wei Wuxian's playful provocations slowly thawing Lan Wangji's icy exterior. The fanfics that explore that thawing, the moments where the jade character's composure finally slips, are some of the most satisfying. It's less about changing who they are and more about the jade learning to value the warmth the cat brings, and the cat learning there's strength in stillness.
That push-pull creates natural plot drivers. A cat-character's impulsive action gets them both into trouble, forcing the jade to step out of their rigid comfort zone to fix it. Or the jade's adherence to rules creates a barrier the cat has to creatively, messily dismantle. It's a built-in source of tension that can fuel anything from a slow-burn romance to a gripping adventure where their contrasting skillsets save the day. The resolution often feels earned because the differences are so fundamental.