i think he means the one that he was sitting on
he needs to give more deatails then -__-
and i dont know i think that statue is made only for pein cuz if u remember in the new chapter theyre was a building it sead that no one could enter that place and maybe nagato was theyre so... maybe hes kind of guarding that place becuse that statue had the rinnegan as well
I think all six bodies have their own chakra still so it's kind of like a community chakra pool. So in essence he has at six bodies plus his own so about 7 people's worth of chakra.
is pein getting unlimited chakra from that strange statue?