There is a scene at the end of the closing credits: Xialing takes control of the Ten Rings.
Following this scene is Xialing's Ten Rings insignia and a statement: "The Ten Rings will return."
There is a scene in the closing credits: Wong introduces Shang-Chi and Katy to Bruce Banner and Carol Danvers, and later all three Asians go for a karaoke night.
Part of the closing credits are a sequence of water forming into the shapes of items/people/locations in the film, and finally forming the film title.