Both Brian Thomas Burrell and Xing Yu played a different role in previous Ip Man movies. Xing Yu as Lin in Ip Man 1 & Brian as Emcee in Ip Man 2.
Dave Bautista and Michelle Yeoh both appeared in Guardians of the Galaxy: Vol. 2 (2017), though they did not share any scenes in that film.
This is a second time Jin Zhang and Tony Jaa together in movie, the first in SPL II: A Time for Consequences.
The only movie in the Ip Man franchise to be released in IMAX