木蘭辭----最後一段（ａｂｏｕｔ雄兔雌兔）

說明木蘭的代父從軍實在掩人耳目，暪天過海, 就像雄兔雌兔一樣, 旁地走都沒有知道是雄是雌。

it means the character is very clever because she can pretended a soldier for
twelve years.(maybe incorrect)