Heat a wok/skillet with oil. Cook the sliced mushrooms and add 1 tbsp soy sauce, 1/2 tbsp white pepper, and a pinch of salt. Cook on medium high for 2~3min.
Set the mushrooms aside and add the julienned carrots. Add 2 tbsp soy sauce, 1/2 tbsp white pepper, pinch of salt. Cook until softened but still crunchy.
Set carrots aside, cook zucchini and negi (no picture sorry) the same way.
Soak bean sprouts in boiling water for around 5 min, then drain. Toss with sesame oil and remaining white pepper.
Add more oil to pan and cook egg to your preference. (Or boil!)
Mix everything for the gochujang sauce together with a whisk.
Take a bowl or large plate and add rice, bulgogi (or other meat), assorted veggies, egg, and sauce. If you're super awesome and have a stone bowl (dolsot) you can use that & add a raw egg yolk and mix it all up.
Enjoy!