It’s just a colour edit from the 9-minute Xinhua video

GJ-21?
I see no crews
In their stream today, the trio/Yankee mentioned that there was a ceremony in July. The ship wasn't commissioned, but rather the ownership of Fujian was transferred from CSSC to the PLAN.
I really like this video. Shows clear speed difference from Fujian vs Shandong for the J-15.