So according to the person posting this photo, this is the new submarine tender ship under construction by Guangzhou Shipyard International Co Ltd. Here are some of the photos of the new submarine tender.
Now, it's kind of interesting that this ship also has the thing in the back (I don't know what you would call it) that is used to lower the LR7 rescue submarine that they are buying from the British. It's also interesting to note that this would be the first submarine tender that PLAN has ordered since Type 648. Considering all the new submarines that are coming out, it's about time that they build a new submarine tender that would make use of LR7. Some people are calling this the 9500 tonne type 926 class.
We also have some new photos of 866 in action.
And finally, CCTV has a clip of different services. The first part is the navy and shows 168 in action. It's actually kind of interesting to watch the different systems (especially the Type 730) in action. You can find the clips here.