The Bi hexagram symbolizes "closeness" and "unity". Its core lesson is: People should sincerely help one another, choose good company, and unite through genuine closeness to avoid isolation and opposition. Below are the life insights and applications from the Bi hexagram:

1. Interpersonal Relationships

• The art of friendship: First Six Yao: Actively extend goodwill (e.g., helping colleagues) to build "trust capital." Sixth Two Yao "closeness from within": Prioritize bonding with those who resonate internally (e.g., friends who share your values).
• Emotional nurturing: Ninth Five Yao "manifest closeness": Maintain independence in love without losing oneself (e.g., not becoming overly dependent on a partner).

2. Professional Collaboration

• Workplace alliances: Sixth Four Yao "external bonding, steadfast and auspicious": Connect outwardly with the capable (e.g., cross-departmental collaboration) but remain upright without flattery. Ninth Five Yao mindset: Leaders win followers through fairness (e.g., profit-sharing mechanisms).
• Business partnerships: Beware of "bonding with the unworthy": Vet a partner’s credibility beforehand (e.g., check credit history, observe past behavior). Emulate "uniting states and befriending lords": Expand influence through ecosystem alliances (e.g., Huawei’s Harmony OS partnering with automakers).

3. Self-Positioning

• Dependence and independence: First Nine "trust fills the vessel": Like an empty vessel, first accumulate value (skills/virtue) to attract mentors. Top Six "closeness without leadership": Stay clear-headed in groups to avoid becoming part of the mob.
• Choosing circles: Sixth Three Yao counterexample: Don’t join harmful groups out of loneliness (e.g., currying favor with power at the cost of principles).

4. Leadership Artistry

• Team cohesion: Ninth Five "manifest closeness": Leaders should act openly (e.g., transparent decision-making) and inspire through virtue. Earthly virtue as foundation: Embrace diverse voices like the earth carries flowing water.
• Crisis management: Danger above: Internal unity is crucial under external pressure (e.g., executives taking pay cuts to weather company hardships together).