1. Prepare all the ingredients first. Remove the pods from the green peas, the corn from the cobs, the carrots and the yam, and immediately put them in cold water to prevent oxidation and blackening.
2. Add a little oil to the bottom of the pot and sauté the ginger.
3. Then pour in all the ingredients and stir fry for 2-3 minutes before adding salt.
4. Add a little starch water to stir-fry evenly before serving, then add a spoonful of sesame oil to enhance the flavor. The starch water is made by diluting a little dry starch with clear water. The starch water is added to make the flavor of the seasoning evenly stick to each grain of the food and make the dish more flavorful in the mouth.