9.1.2 Decimal Path-index is a Decimal Path-index for the 9th/32 Path-indexes: Yesod.
1st/3 Yin Great Curves TianTaiJi and TianCai; "Heaven's Talent"
9.1.2 DPI: 1st/3 Yin (陰) SanTaiJi (三太極) great curves TianTaiJi (天太極); "heaven’s (天; HanGul: 천: Cheon; כען) great curve or boundary,” is the station for the 1st/3 Yang talents or powers TianCai (天才); "heaven, celestial, sky or deity talent or power," associated with the binary color black.
Plus Yang Polarity
18.104.22.168 DPI: 1st/3 powers or talents TianCai (天才); "heaven’s great power or talent” of the Yin SanTaiJi (陰 三太極) is attributed with the plus or positive Yang (陽) polarity of Chinese philosophy.