In essence, a Jiang Shi is a kind of youkai.

Considering this is Gensokyo, there's nothing unusual about that part...

Just let me finish first. The problem is that it is an animated corpse.

A... corpse?!

It is manipulated by a wicked hermit called Kaku Seiga who uses symbols to control it.

Ehh... So basically, it's like...

Yes

An autonomous doll.

I see...

But what about the original soul that was bound to this body? Perhaps a different soul is used for this...

Oh

I dunno about all that complicated stuff~

I... I see.