Stir fried rice with vegetables

This recipe is from cook book called Perfect Chinese. I changed all the vegetables because I wanted to use whatever vegetables I have in the refrigerator. Recipe used chicken but I didn't use chicken.

Ingredients

•   2 tablespoon vegetable oil
• 1 onion
• chili paste ( optional ) 
• 1 cup peas
• 2 tablespoons soy sauce
• 2 large carrots, diced
• 1 zucchini, chopped
• 1 large red bell pepper, diced
• 1 large tomatoes, diced
•   2 cups cooked white rice
• salt and pepper

Directions

1. Heat oil in a large skillet over medium heat. Add the onion and saute until soft. add chili paste.
2. Stir in carrots, zucchini, red bell pepper, peas and tomatoes stir-fry another 5 minutes. Then add rice and stir thoroughly.