emptiness, void, abstract theory or guiding principles, empty or unoccupied, diffident or timid, false, humble or modest, (of health) weak, virtual, in vain
self, oneself, sixth of the ten Heavenly Stems 十天干[shi2 tian1 gan1], sixth in order, letter "F" or Roman "VI" in list "A, B, C", or "I, II, III" etc, hexa