In a bowl, combine vegetable stock, cornstarch, sesame oil, cooking rice wine, soy sauce, salt, and ground black pepper. Stir until everything is well incorporated and set aside.
Heat a pan and pour-in cooking oil.
When the oil is hot enough, sauté the garlic and ginger.
Add the black beans and cook for a minute.
Add the red bell pepper and cook for another minute.
Put-in the fried tofu and cook for 2 minutes.
Add the green onion and bok choy and cook for 2 minutes more.
Pour-in the sauce mixture and cook until the texture becomes thick.
Transfer to a serving bowl and serve.
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