少纵即逝
      Explanation: Vertical: release; death: lost. A little relaxation disappeared. Describe the time or opportunities is easy in the past.
      Source: Su Song, "the text and to draw the cloud When the bamboo Yan Gu": "vibration then straight to the recovery of their findings, such as the rabbit from the falcon down, less vertical and the death carry on."
      Examples: Cardiff raging rapids, ~, how can ponder this long time indeed! (Qing Ji Yun "Notes of" Volume XII)