The second question of the first A90 third season (May)
scabbard
Questioner: Yang Bei
Explanation: The scabbard is where the sword hides its edge. The bloodthirsty sword always tries to find every opportunity to unsheath, but the scabbard restricts it. The scabbard restrains the sword, but also protects it. No matter how sharp the sword is, without its scabbard, it will become nothing but iron in the wind and rain. A sword retains its edge only when it is in its scabbard.
Conception: