Goguma Julgi Bokkeum(Stir-fried Sweet Potato Stems)

[Ingredients]
350g sweet potato stem, 1/2tbsp salt
1/4 onion, 1/2 green onion
1 red chili, 2 spicy chili
[Seasoning]
1tbsp cooking oil, 1tbsp perilla oil
1tbsp minced garlic, 15 minced anchovy
1tbsp cooking wine, 2tbsp dark soy sauce
2tbsp tuna sauce, 3tbsp water
2tbsp perilla powder, 1tbsp sesame