The preparation of watercress is as follows:

1. Clean the watercress.

2. Heat oil in the pot and sauté the garlic until fragrant.

3. Add watercress into the pot.

4. Stir-fry the watercress until soft and then add appropriate amount of salt.

5. Add a little chicken essence.

6. Pour in an appropriate amount of light soy sauce to enhance the flavor.