Why choose Feng Shui training instead of self-study?

It is best to learn from an experienced master. What can I learn from the three to seven-day training course? Some of the knowledge taught in the training class may still be false. In fact, it is better to read a book than to attend a training class. The geomantic knowledge of ancient books has been verified after thousands of years and hundreds of years of precipitation, and the knowledge of ancient books is true. Moreover, some training courses blow some fake feng shui knowledge in order to gain eyeballs. For example. The core of Feng Shui is Qi, which is recognized by the development of Feng Shui. Moreover, some training courses will describe the core of Feng Shui as energy field. This is the gap. The knowledge gained in the training course is unreliable.