Picking celery and washing yam;
Cut yam into strips and soak in cold water;
Celery is cut into oblique blades;
Stir-fry onion and ginger in oil pan;
Stir-fry celery in a pot;
Stir-fry yam in a pot, add a little water as appropriate, cover the pot and cook for a while;
Add salt and chicken powder and stir fry. Stir well and serve.