Lu Shen (Prosperity Star) is one of the Eight Characters' Divine Stars and Symbols, governing sustenance, official rank, and blessings. Lu Shen is determined based on the Day Master: Jia sees Yin, Yi sees Mao, Bing sees Si, Ding sees Wu, Wu sees Si, Ji sees Wu, Geng sees Shen, Xin sees You, Ren sees Hai, and Gui sees Zi. A命 chart containing Lu Shen indicates blessings of stable livelihood and lifelong freedom from material want; however, one must guard against 'Lu Feng Chong Po' (Prosperity Star being clashed or void).
Determine Lu Shen by referencing the Day Master: Jia Day Master with Yin Branch, Yi Day Master with Mao Branch, Bing Day Master with Si Branch, Ding Day Master with Wu Branch, Wu Day Master with Si Branch, Ji Day Master with Wu Branch, Geng Day Master with Shen Branch, Xin Day Master with You Branch, Ren Day Master with Hai Branch, and Gui Day Master with Zi Branch.
For a person with Jia as the Day Master, if any of the Four Pillars contains the Yin Branch, Lu Shen enters the chart, signifying blessings of stable livelihood and freedom from material hardship.