This link gives an actual description of the scene: https://www.syfy.com/syfywire/mortal-kombat-preview-opening-scene

This video you can watch the vlogger describe here: https://www.youtube.com/watch?v=NojAX0-mSwA

This is the description about the first 12-13 minutes, basically the whole scene before the title card. I have put it into a spoiler tag, and my take on it is also in a spoiler tag:

Mortal Kombat begins in 1617 feudal Japan at the home of Hanzo Hasashi, the leader of the Shirai Ryu clan. A loving father and doting husband, he and his wife share a tender moment before he heads off to fetch water from the river as his wife gardens and his son, Jubei, heads to the house to try to stop his baby sister from crying. While Hanzo is away, Bi-Han (Joe Taslim), leader of the Lin Kuei rival clan, attacks, but not before Kana hides the baby. When Hanzo returns, he only has moments to mourn his wife and son, frozen in a block of ice, before he single-handedly takes out all 15 Lin Kuei assassins with brutal efficiency. Bi-Han waits until the final members are dispatched before calmly explaining, "This is the end of your bloodline, your mighty clan, the Shirai Ryu have been exterminated by me, Bi-Han.” Hanzo, who does not speak his language, does not understand his words, but the meaning is clear and the two finish their discussion through an epic, brutal fight in the woods. After Bi-Han delivers the killing blow, Hanzo spends his final moments bleeding out, trying to get back to the house to protect his crying baby girl. After his final breath, fire erupts from within his body, reducing him to ashes, and moments later, a bolt of lightning brings Raiden (Tadanobu Asano) to Earth. He finds the baby girl hidden under the floorboards of the Hasashi home and leaves with the child the way he came. My Take: If this implies as much as I think it will, this changes the original concept in the 2018 leaked script of Cole being Scorpion's son. Now, it is implied Cole is a descendant of the rescued female baby. This now makes a whole lot more sense especially when you look at the fact they added the feudal Japan scene, which is ancient Japan, and yet Cole is of this present day, so being a son to a man born in feudal Japan would have not made any sense.

So, Hanzo had an undiscovered second child who survived in this version. Seems almost certain that she continues the lineage, and that Cole is her and Scorpion's descendant. .

That seems to pretty much confirm speculation on who Cole is. I would have preferred if he ended up being a character from the games, like Kuai Liang. But all signs pointed away from that from the start, so I guess that's that.

Aside from that, there are some nice touches here, like that Sub-Zero is NOT a ninja, but a Chinese assassin. That's something the games used to care about too, until they apparently forgot. It makes the desperation that Hanzo was facing sound a lot more poignant when he's being taunted by someone he doesn't even understand.

I don't think it was any secret that the Hanzo scene took place hundreds of years ago, and I guess it makes sense for what they're doing. I'm still not a fan of it, but I hope to enjoy it for what it is.