How did Zhao Kuangyin cut off the feng shui vein of Taiyuan, the imperial capital?

Taiyuan, as the ancient capital of the Nine Dynasties, was once the capital of Zhao, Qian Qin, Northern Qi, Tang, Wu Zhou, Later Tang, Later Jin, Later Han and Northern Han Dynasties, and the imperial capital was Taiyuan. During the Northern Song Dynasty, Song Taizong and Zhao Guangyi were very annoyed because they could not attack Jinyang for a long time. Later, I heard that Jinyang City was a famous "Dragon City" in history. Many emperors appeared, so they killed their hearts and ordered Jinyang City to be set on fire. Therefore, there is a saying of beheading Long Mai.