Donnie Yen won't lose, let alone die. Let's see if I'm correct.
Kind of like Common didn't die in the second one? Yeah that's possible.
Seeing how he's a big time actor now, I doubt they'll kill him but who knows, they may make him do some bad ass moves before he succumbs. He already died in Ip Man 4, Rogue One, Hero, and partially in Highlander End Game.
If he isn't killed, he might return in Part 5.