Which is better, Taiyi, Qimen or Liu Renxue?

Taiyi, Qimen and Liu Ren are also called "three unique skills", which are China's three great stunts. Taiyi is based on Tianyuan and measures state affairs; Qimen attaches importance to geography and measures things in groups; Six RENs mainly focus on personnel and surveyors. Taiyi measures state affairs, which is the taboo of emperors, and its reputation is not obvious. Qimen is famous for measuring collective affairs. Liu Ren's reputation has been damaged because he is a mixed bag of fish and dragons. Therefore, it is best to develop the best knowledge among the three forms of Qimen.