Dear teachers, why did Mr. Feng Shui say that a scholar in my family cannot be a military commander?

Dear teachers, why did Mr. Feng Shui say that a scholar in my family cannot be a military commander? -the difference between the mountains in the surrounding terrain. Tushan, the mountain is round and many literati; Stone mountain, the mountain is steep and many military commanders; The earth mountain covers the stone mountain, and the stone body is obviously exposed everywhere. People are determined to take the text as the table and the martial arts as the truth, and most of them are characterized by joining the army.