1.Bring a pot of salted water to boil (not as salty as the sea, but enough that you can taste it). 2.Meanwhile, rinse and cut the ends of each green bean. 3.When water is boiling, blanch the green beans for 3 minutes. Drain. 4.In a medium size pan, add the vegetable oil, garlic, ginger and dried chilies. Cook for a minute and add green beans. 5.Toss and cook for another minute, then add soy sauce and oyster sauce. 6.Toss well, add sesame oil and turn the heat off. Serve.