Of course, whether these details are true or not remains to be seen. That said, the details are exciting.
The rumours are that the story follows Shang-Chi as he is recruited by MI6 to prevent The Mandarin, who might be his father, from retrieving the Ten Rings in order to conquer the world. Shang-Chi is aided by two MI6 agents, Clive Reston and Leiko Wu, and together fight off his half-siblings Cursed Lotus and Moving Shadow to get to The Mandarin (not the one actor pretending to be The Mandarin in Iron Man 3).
The film will also include Samuel L. Jackson’s Nick Fury and the dragon Fing Fang Foom.
There’s also a bunch of casting rumours, which includes Jessica Henwick as Leiko Wu, Sam Claflin as Clive Reston, Pierce Brosnan as Jack Tarr, Awkwafina as Cursed Lotus, Joe Taslim as Moving Shadow, David Gyasy as M’Nai, BD Wong as Zhu, and Constance Wu as Mei Ling.
Again, these are only rumours at this point. However, the informant also had two images of concept art as proof. See the images below.