Shell the raw shrimps and devein. Chop
them roughly and set aside. Top and tail the green beans, use a sharp
knife to remove the strings and cut into thin diagonal slices. Heat up a
wok with oils and stir fry the onion and shrimps together for about 2
minutes. Add the beans and stirf fry for another 3 minutes. Mix in the
seasonings, cover with a lid and simmer on low heat for about 6 minutes
or until the beans are just tender. Ensure they are not overcooked.
Serve hot with rice.