hòuh yàuh gaai láan
蠔油 is oyster sauce (蠔 is oyster and 油 is oil, so more specifically oyster oil), and 芥蘭 is Chinese broccoli, so 蠔油芥蘭 is oyster sauce Chinese broccoli.
Chinese broccoli, boiled or steamed and served with oyster sauce.
Chinese broccoli