Cook the rice in boiling salted water for 15-20 minutes. Drain and rinse briefly with cold water. Mix 4 tablespoons of vinegar, 2 tablespoons of sweet chilli sauce, 1 tablespoon of soy sauce with the rice and leave to stand for 30 minutes.
In the meantime clean and wash the spring onions and cut them into fine rings. Blanch in boiling salted water for 1-2 minutes. Drain on a sieve. Clean, wash and cut the peppers into small cubes.
Peel the garlic and press it through a garlic press. Mix rice with spring onions, paprika, garlic and oil. Season with salt, pepper and sugar. Season to taste with vinegar, sweet chili sauce and soy sauce.
Allow to soak for another 30 minutes. Shortly before serving, crumble the feta cheese and fold in.