(tāo) bow case or scabbard; to hide; military strategy
(tāoguāngyǎnghuì) lit. to cover light and nurture in the dark (idiom); to conceal one's strengths and bide one's time; hiding one's light under a bush
(tāolüè) military strategy; military tactics; originally refers to military classics Six Secret Teachings 六韜|六韬 and Three Strategies三略