虽覆能复

Explanation: Review: overturned; re: recovery. Although overturned, but also recovery. Means that after erratic. 　　Source: "Guiguzi flying clamp": "may be cited the contrary, may be cited the reply. Although cover to cover, without losing their degrees." 　　Examples: "~" It is something to fear. But a means, we often met socially. ★ Lu Xun "padding II"