1. Take the weight of lobster sauce.

2. Wash the long beans and break them into small pieces for use.

3. Put the oil in the pot and pour in the long beans for frying.

4. Add the right amount of salt and fry until it changes color.

5. Add the right amount of lobster sauce and stir-fry.

6. Add appropriate amount of oyster sauce and stir well.

7. After the beans are fried thoroughly, add a proper amount of monosodium glutamate and serve.