Spirits and stars · Auspicious
Traditionally connected with carriages, attendants and dignity. Yu means carriage: capable company, and things done with some style.
Look up the four branches from the day stem: Jia sees Chen, Yi sees Si, Bing sees Wei, Ding sees Shen, Wu sees Wei, Ji sees Shen, Geng sees Xu, Xin sees Hai, Ren sees Chou, Gui sees Yin.
Source: San Ming Tong Hui, spirits and stars chapter
In practice it points to having capable help around you and to travel and presentation going smoothly. It is also traditionally read as meeting partners in good circumstances.
Used as a chart hint only (it does not enter any score). The rule is implemented from the fixed classical table and asserted by its own guard (check-shensha).
Rule of thumb: these markers are read from fixed classical tables, and the scores and advice come from a separate model. Both are laid out on the site, and neither is a claim about what will happen.
Is it a wealth marker?
Traditionally it is about dignity, attendants and carriages rather than wealth itself.
Does the pillar it sits in matter?
Yes: the year pillar leans towards family and early life, the day and hour pillars towards yourself and later life.