It depends on the height of the person who does the cooking. Is your 平面烹食爐 an induction cooker or the one using town gas? If induction ( totally flat surface), you may use a higher countertop.
I will move house and am working on the design of my new kitchen. You may take my measurements as a reference. I am 5 ft 2. Will use induction cooker. My conutertop will stand at 880 mm.
When you decide the height of your countertop, you should also take into consideration the height of your sink. If the sink is too low, it will be tiring to bend over so low to wash the dishes etc.