Place a wok or high sided saute pan over medium-high heat. Add oil and swirl to heat up.
Add garlic, ginger, and scallion and saute for one minute.
Add bok choy and saute for 2 to 3 minutes.
Add soy sauce, oyster sauce, black pepper, and Shaoxing and mix well.
Add chicken stock and allow bok choy to braise for 2 to 3 minutes until tender.
Serve immediately.