Welcome to the Golden Daggers Club!
Shang, who now has no reason to use his alias with Katy, heads to Macau to find his sister and warn her that their father is coming for her pendant. He shows up at the address on the postcard she gave him (the In-Universe address 1888 Av da Praia Grande, Macau, China) to discover a fight club that contains humans and non-human combatants.
The Golden Daggers fight club is hidden within a skyscraper in Macau which is under construction. It appears to be located on R. do Dr. Pedro Jose Lobo with the reflection of Grand Lisboa casino visible in its numerous windows. Minimal photography was completed in Macau with the interiors and exteriors of the fight club being shot on a soundstage in Sydney, Australia. The reflections of Macau (as well as the street and city views) on the skyscraper were all digitally created, which is why the exact location of this building is approximate.
(Shang-Chi and the Legend of the Ten Rings, 2021)