Where can I buy a professional Feng Shui compass in Tongshengtang in Hong Kong?

Beginners buy a medium-sized Feng Shui compass, and a seven-to-eight-inch comprehensive disk is the best, and ternary and triple can be used. If you have the foundation of the Book of Changes, you can learn Sanyuan and Kong Xuan first. There are many mountains and waters in the south, and there are also many Feng Shui teachers who use the three-in-one school. Those Mr. Feng Shui, who have good knowledge, have learned several methods and used them flexibly, and they have all the common contents of compasses of 30 ~ 40 layers. Official website searches for ~ medical clinic in Baidu.