In a large bowl, combine the chicken wings, rice cooking wine, salt, and sugar. Mix until evenly coated.
In another medium bowl, whisk together the cornstarch, tapioca starch, and baking powder.
Working one wing at a time, quickly coat in the starches and transfer to a nonstick baking sheet.
Let the wings rest for at least 30 minutes. During this time, the starches on the outside will hydrate. In the meantime, you can make the sauce.
Place the salted egg yolks in a steaming dish and steam on medium-high for 15-20 minutes until soft. Transfer to a food processor and blend until they become a fine powder. Or use a fork to mash them.
Melt the butter in a large nonstick pan over medium heat. Add the garlic and cook for 30 seconds. Add the salted egg yolks, sugar, salt, and MSG, and cook for another 1 minute then set the pan aside.
Heat about 1-inch of oil to an initial temperature of 400°F (the temperature will drop to 350℉ when you add the wings). Use a spatula to carefully transfer half the wings to the hot oil. Deep-fry for 5-6 minutes until cooked through, then transfer to a paper towel-lined plate to dry. Allow the temperature to come back to 400°F then repeat with the other half. Let the wings rest for at least 15 minutes before doing the second fry.
Heat the oil to 425°F. Fry the chicken wings for 1-2 minutes until golden brown and very crispy. Immediately transfer them to the salted egg sauce and toss to coat. Enjoy!