It's first sea trials. They haven't even installed the arrestor cables yet.
so they're trialling a floating mockup? Engine technology and how to seal a hull should be pretty much understood already, it's not like China doesn't build big ships, they're letting it out of the yard without its teeth.
seems...irresponsible to me, esp. isnce one of the FIRST things you're going to want to know about your new Aircraft Carrier, is whether or not it will actually function like an Aircraft Carrier-aka whether the arrestor gear works, deck can take the pounding, catapults function, and what flight ops are doing to the carrier's weight and balance for navigation and 'not tipping over' testing.
dunno, maybe I'm totally off-base here, but 'Sea Trials' to me reads as testing whether or not a given ship can perform the basic functions it was designed to perform, particularly outside of dock.