What I mean: There is basically no reason for why Dalian would remove the aft section again, 11 days after they have welded it on the hull. Or disassemble the 055, for that matter.
EDIT:
Probably I'm wrong with calling it the "aft section" since this might actually be the prow of the ship.
But my point still stands.
Updated the image.
I think I have an explanation for what happened.
I think that the 055 in Nov is actually at a lesser state of completion than it looked then, and that the 055 in the two pictures are really the same ship.
If we look carefully at the 055 in Nov we can see it is still actually in several unattached modules, but it looks like it is more complete than it actually is because the crane is overhead blocking the area where there is a space between two modules, and what looks like the keel of the "bow" of the 055 in the Nov picture is not really attached to the 055 at all.
And in the December picture, the modules are a little more joined closer together, and the overall ship modules are moved a little bit as well, and the "bow" of the 055 has been moved away to whatever site or ship it is meant for (aka not related to 055), thus giving the appearance like the ship has become "less" complete, when in reality the ship was never that complete in November to begin with.