Ghost stories 蒼月擴充 有關Su-ling - 桌遊

想問一下
規則書中有關Su-Ling的存在時間點有疑問
規則書第三頁最下面：
So that players do not forget to perform this movement during the Buddhs
placement phase.

At the end of the player's turn, that player must return the Su-Ling tile
even if the figurine has not been moved.

為什麼在Buddhs placement phase放好Su-Ling後，在回合結束就又把Su-Ling放回收納盒
這樣Su-Ling不是都還沒作用到嗎？

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