I wonder why they painted it in two tones...
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Merged the two photos together through the magic of microsoft paint, and added my own lines about the hull shape.
For a while previously I thought the front deck couldn't possibly be representative of the actual hull base, but then I realized how the PLAN's bows are elevated. So, going from precedent on other ships, assuming the main gun on the mock up is on an inclined forward bow, we can extrapolate the possible height of the hull relative to the structures atop. In fact this is the only way which makes sense, given if the mock up's deck level is representative of hull height then the helicopter hangars will be too low, barely high enough to fit a Z-20.