A pantry-cross between Shanghai 菜飯 and a Roman pasta. Guanciale renders into a pool of cured-pork fat; day-old jasmine rice fries up in it, glossy and separate; bok choy stems crunch, leaves wilt to silk. Just enough soy to know it's Chinese.
This is a riff on Shanghai 菜飯 — vegetable rice traditionally cooked together with 鹹肉 (xian rou), a home-cured salt pork. Guanciale is its closest Western cousin: cured pork jowl, mostly fat, deeply seasoned. Pancetta works in a pinch but renders less fat and tastes thinner; smoked bacon will hijack the dish. If you can find Chinese cured pork belly (臘肉), use that instead and steam it for 10 minutes first to soften.
Day-old rice is non-negotiable. Fresh-cooked jasmine steams in the pan and turns to porridge. If you forgot, spread cooked rice on a sheet pan and chill it uncovered for an hour — not a perfect substitute, but workable.
Restraint with the soy is the whole game. Guanciale is already salty; bok choy is already sweet. The dish should read pale-jade and gold, not mahogany-dark. If you're tempted to add more soy, splash a little more Shaoxing instead — the alcohol carries flavor without the heaviness.