Which compass is better for beginners of Feng Shui?

Hong Kong 18 layer compass, which is good for beginners. Many students majoring in Feng Shui in schools use it. Of course, it's not authentic Hong Kong goods. As a beginner, it is enough to understand big letters. General imitations are within the price of 100 yuan. If it is genuine, it will cost thousands of dollars, so it is not necessary at first.