42: I

This hexagram shows the elder son (thunder) beneath the eldest daughter (wind) — a configuration that suggests natural increase through proper relationship. Thunder provides the initial impulse while wind extends and distributes the force. The strong line at the top moves downward to strengthen the lower trigram, modeling how genuine increase occurs: power descending to serve what is below. Increase here is not accumulation for its own sake but augmentation that serves a larger purpose. The wind spreads what thunder has awakened. This is the increase that comes when those with capacity deliberately strengthen those without, creating conditions where all may flourish. The moment favors bold undertakings, but only those aligned with this downward-flowing principle. To receive increase, one must be worthy of it. To give increase, one must do so without thought of return. The greatest expansions occur when this exchange becomes natural — when strength flows toward need as inevitably as wind follows thunder.