Prepare all your vegetables by cleaning and cutting them. Heat oil in a pan. Once hot, pan-fry the diced potato and carrots until it becomes soft and looks cooked. Remove from the pan and set aside.

Using the remaining oil, sauté onion, garlic, and tomato and bell peppers. Add ground pork once the onion softens. Cook while stirring for 2 minutes. Pour the soy sauce into the pan and add water. Adjust the heat to low. Cook uncovered until the liquid reduces to half.

Add oyster sauce and cook for 5 minutes. Put the fried potato and carrots back into the pan. Continue cooking for 2 to 3 minutes.