Step 1Cut the duck meat into bite-size pieces. Set aside near the stove.
Step 2In a small bowl, stir together the plum sauce, rice wine and soy sauce. Set this seasoning sauce aside.
Step 3Separate the white and green parts of the green onion, as you'll be adding them to the stir-fry at different times. Set aside near the stove.
Step 4Heat the oil in a wok or large skillet over high heat. Add the ginger, and stir-fry until aromatic, about 20 seconds. Add the white onion parts and continue cooking until the ginger starts to pick up some color, about 15 seconds.
Step 5Add the celery, carrot, bean sprouts and a generous sprinkling of salt. Cook, stirring constantly, until the vegetables have softened slightly, about 2 minutes. Add the duck and cook, continually stirring for 1 minute to heat through.
Step 6Add the seasoning sauce, and cook, stirring, for another minute to finish cooking the vegetables and allow the duck to absorb the flavors. Add the green sections of onion, stirring for about 15 seconds to wilt. Transfer to a plate and serve immediately.