What is this training dummy used for?

In the first level of Shadow Tactics: Blades of the Shogun, there's an item highlighted in the pictures below

Screenshot of the strange item from the default camera angle Screenshot of the strange item from a different angle

To me it looks like some kind of training dummy, but I can't interact with it in any way. What can it be used for?


Mugen can interact with these dummies by chopping them in half. This appears to serve no practical purpose whatsoever.