Wash and drain Chinese leeks. Cut off the tops and remove any bruised outer dark green leaves. Then slice each leek at a diagonal into ¼ inch thick slices.
Heat vegetable oil in a wok or large pan. Fry roasted pork belly until lightly brown, about 2 minutes.
Add garlic and sauté for about 20 seconds.
Then, add leeks, soy sauce, and salt. Stir fry for about 3 to 4 minutes.
Add cornstarch mixture and continue to stir fry until sauce thickens. Turn off heat.
Transfer to a plate and serve immediately with steamed rice.