1. Heat oil in a wok over medium heat. Add squid and onion together, stir quickly until nearly cooked. (Be careful not to overcook. You will get the best taste of squid only when the squid is nearly cooked.)
2. Add roasted chili paste, soy sauce, green onion, chilies, sugar and stir fry for another 2 minute and until all ingredients mixed well.
3. Transfer to a serving dish. Garnish with coriander leaves on top and serve immediately with steamed rice.