Hexagram 15, Qian, reveals that the most profound wealth is not found in the clamor of display, but in the quiet confidence of substance. The image of a high mountain remaining beneath the earth symbolizes a strength that does not need to announce itself to be valid. In the realm of material affairs, this is the wisdom of sustainable growth. True prosperity flows ("亨") to those who understand that accumulation is not a competition for dominance, but a stewardship of resources. By eschewing the arrogance of excess, one avoids the volatility of envy and the strategic blindness of ego. The "gentleman" here is the prudent architect of fortune who knows that to finish well ("有终") requires the discipline to remain grounded. Wealth, therefore, is not merely a tower built to scrape the sky, but a deep root system that ensures longevity against the storms of market fluctuation. Modesty becomes the ultimate financial strategy; it keeps the channels of opportunity open and ensures that material success serves life, rather than consuming it. In this light, humility is not a lack of ambition, but the very foundation upon which enduring empires are built.