Bring a large pot of water to a boil. Once the water is boiling, add the noodles and cook according to the package instructions.
Meanwhile, combine the soy sauce, oyster sauce, sugar, sesame oil, lard, and chicken bouillon powder in a serving bowl and mix well. Microwave on medium power (500-600W) for about 20 seconds, or until the lard has melted.
Drain the cooked noodles in a colander. Add the noodles to the bowl and toss well with the seasoning mixture.
Top with your favorite toppings, such as chashu pork, menma, and chopped green onions. Serve with vinegar, la-yu, and grated garlic on the side, if desired, so that each person can add a small amount to taste, either at the beginning or while eating, to change the flavor.