Was the cloud sound in the sixteenth episode of Hua killed by the cloud?

16 this episode is obviously not a cloud, but a cloud is pretending, and it doesn't look like it.

Everyone knows that YunYin won't have a wound when he is slightly injured, and YunYin deliberately covered the wound on his hand when he toasted the adults, indicating that this is a wounded YunYin, not YunYin.

Only Benjamin's sword can break this bond. Clouds didn't get this sword, and Yunyin can't be killed now, so he must have been imprisoned by clouds.