Guī Mèi (歸妹) — The Marrying Maiden

Thunder above Lake — movement in a position of subordinate power, entering an arrangement where the terms aren't yours to set. "Undertakings bring misfortune." The warning is specific: don't take the subordinate position and then try to act from it as if it were otherwise. The secondary position has its own integrity and its own way of working. Proceed from where you actually are.