Thinly slice the onion and julienne the bell peppers.

Heat olive oil in a pan over medium heat, add pork, and cook until the color changes. Add onion and bell peppers, and sauté until softened.

Add corn and seasonings (ketchup, sauce, salt, and pepper) to the pan. Stir until the mixture is dry and let it cool.

Place half a slice of melting cheese horizontally on a spring roll wrapper, add 1/8 of the filling, and roll tightly. Seal the edge with a flour-water mixture. Repeat for all wrappers.