The area beneath the little finger is known in palmistry as the "Mount of Mercury" — a term borrowed from Western astrology's system of mapping the palm into planetary zones, something many people are unaware of. Vertical lines appearing on or at the lower edge of this mount are sometimes called the "business line," "health line," or "Mercury line." Folk palm readers occasionally label them the "Fortune Star Line" (fu xing xian). The inconsistent naming is the main source of confusion around this line.
Where Does the Name "Fortune Star Line" Come From?
Strictly speaking, "Fortune Star Line" (fu xing xian) is not a fixed term in most classical palmistry texts. The more established terms are the Sun Line (below the ring finger) and the Mercury Line (below the little finger). Folk palmists tend to call a clear vertical line beneath the little finger the "Fortune Star Line," probably because traditional readings link it to wealth, eloquence, and commercial instincts — auspicious associations that made the name stick.
If you have seen someone on a fortune-telling stall or a short video claim that "a line here means wealth is shining upon you," they are almost certainly referring to the Mercury Line or a vertical marking on the Mount of Mercury, just repackaged with a more appealing label.
In some contexts, "Fortune Star Line" also refers to the Sun Line — the vertical line near the ring finger — because the Sun Line itself carries associations with fame, achievement, and good fortune. Both usages exist; it is worth confirming which position someone means when the term comes up.
How to Read the Vertical Line Below the Little Finger
The clear vertical marking on the Mount of Mercury is traditionally read along several dimensions:
Eloquence and communication. Mercury governs communication, language, and commercial exchange in Western astrology, and palmistry adopted this symbolism directly. A clear, straight, and relatively long line is associated in folk tradition with sharp verbal skills and aptitude for roles requiring negotiation or persuasion — sales, law, presenting. Personally, I think this should not be taken as a deciding factor; hand lines are strongly influenced by genetics and manual habits, and any correlation is hard to separate from coincidence.
The Health Line in a different guise. Many palmistry books label the line running diagonally from beneath the little finger toward the wrist or life line as the "Health Line" — note that this one runs diagonally, not straight up and down. When it appears, traditional readings do not necessarily treat it as good news: a Health Line that is fragmented, broken, or deeply colored is said to suggest the digestive or nervous system warrants attention. This diagonal line is a different feature from the short vertical markings on the mount itself, and many people conflate the two.
Commercial instinct and wealth. When the Mount of Mercury is noticeably full and carries one or two clear short vertical lines, traditional palmists read this as commercial sensitivity and good timing for business opportunities. This is the origin of the folk claim that the "Fortune Star Line" signals strong wealth luck. That said, a single line in isolation is not enough — the clarity of the wisdom line (head line) and the state of the index finger (Jupiter finger) both need to be considered alongside it.
Form Matters: Different Shapes, Different Readings
The same general area can show very different markings, and the readings differ accordingly.
- One clear, straight vertical line: The most classic Mercury Line form. Traditionally the most auspicious reading — strong communication and financial luck together.
- Several fine, densely packed vertical lines: Folk tradition sometimes reads this as a sign of an overactive mind — quick thinking but prone to overthinking, not necessarily negative, but scattered energy is possible.
- A vertical line with a break in the middle: Traditional reading suggests a disruption or pause at some point — a stall in career or finances during a particular period. The reliability of such fine details varies considerably from reader to reader, and I would not recommend reading too much into it.
- No visible line at all: The vast majority of people have no obvious vertical marking beneath the little finger. Absence of a line does not mean absence of luck — this is one of the most common misconceptions in folk palmistry. The various lines described in palmistry books are rarely all present in any one real hand.
Common Mistakes When Reading This Line
The first mistake is mistaking fine creases for main lines. Skin folds, pressure marks from gripping, and tiny surface creases multiply around the little finger under a magnifying glass. Traditional palmistry requires a line to be "deep, long, clear, and straight" before it is worth reading. Faint, short, or broken marks can be ignored.
The second is reading a single line in isolation. The Mercury Line cannot be divorced from the rest of the hand. If someone's life line is shallow and their head line is fragmented, declaring "great wealth luck" on the strength of one small vertical marking is irresponsible. Traditional palmistry is a holistic judgment, not a checklist of line-by-line correspondences.
The third is confusing the direction of the Mercury Line and the Health Line. As noted above, the Health Line runs diagonally; the Mount of Mercury's short vertical lines run perpendicular to the palm's transverse creases. Many online palmistry diagrams blend these two together — pay attention to the directional annotations on any diagram you reference.
Palmistry in China has a history spanning several thousand years, with classical texts such as the Mayi Xiang Fa (Hemp-Coat Physiognomy Method) and the Liuzhuang Xiang Fa (Liu Zhuang Physiognomy Method) recording palm line interpretations. The Mercury Line terminology, however, carries clear traces of imported Western astrological thinking and is a product of the modern blending of Eastern and Western traditions. When you encounter names like "Fortune Star Line," "Mercury Line," or "business line," variations in interpretation across different sources are entirely normal — there is no need to argue too long over which version is the "authentic" one.
Articles in this column are for cultural and educational purposes only and do not constitute life advice.