- - - - --- --- --- --- 34 HEXAGRAM FOR GREAT POWER is named 大壯 (dà zhuàng), "Great Invigorating". Other variations include "the power of the great" and "great maturity". Its inner (lower) rigram is ☰ (乾 qián) force = (天) heaven, and its outer (upper) trigram is ☳ (震 zhèn) shake = (雷) thunder.