Add a small pinch of salt and white pepper to ground meat. Mix well and set aside for 10 minutes. Pour around 1 tablespoon of cooking oil in wok and fry the ground meat until crispy and slightly browned. Transfer out.
Add another 1 tablespoon of cooking oil and fry garlic, ginger and Thai pepper until aromatic. Pour chopped green beans and fry for 3-4 minutes until softened.
Return ground pork, add light soy sauce and a small pinch of salt if necessary. Simmer a while until all the sauce is evaporated.