This hexagram is named Zhen, meaning vibration. It reveals the principle that governance should be strict and clear with laws, so that the world may be warned and have lasting peace. In personal conduct, one should be fearful and cautious, so that one may cultivate oneself, reflect on mistakes, and avoid danger. Thunder represents vigorous action, vibration, and impulsive, unstable phenomena. Thunder signifies great momentum, yet it is an empty illusion with sound but no substance. This hexagram is strongly to be avoided in interactions with others. It indicates superficial warmth and enthusiastic actions that are insincere. If one does not treat others with sincerity, they will be greatly disappointed. In the hexagram, the yang energy is suppressed by two yin energies, thus it must strive forcefully to break through and rise. Both the upper and lower trigrams are thunder, indicating intense activity.
This hexagram shows the sign of spring energy bursting forth, indicating a desire for great achievements and a surge of effort. However, it's important to note that the movement of thunder signifies the wrathful energy of heaven and earth, generated by the clashing of yin and yang energies. Therefore, when obtaining this hexagram, dealing with women or matters related to women will be difficult. One must approach these situations with caution and reverence to avoid mistakes.