I had a lot of fun with this one.  It had a very refreshing feel to it.  I liked pretty much all of the female characters that were introduced and it probably helped that pretty much none of them were there for face slapping.  I also liked that the women were just as likely to take the same jobs as the men, although I did start to notice that despite that, there was never a woman in a high ranking position--they were never tribe leaders or priests or really even seemed to get that strong, except for one woman who was introduced as a beast king... in the extras.
Additionally, I was pleased that despite the fact that Zhou Ji came from a modern time period and obviously had more modern sensibilities, he didn't condemn anyone in the clan for how they were.  He didn't try to correct people when they were improperly dressed, except for handing Xiong Ye his clothing and averting his own eyes.  For the most part, he let them live how they wanted to except for making quality of life improvements.  This starting changing a bit towards the end and became especially apparent in the extras when he started using his position to impose modern family dynamics on the society but for the most part it was ignorable.
I'm not going to touch on some of the whole primitive = stupid things because for the most part, it was played more cute than anything but it could be a turnoff for some.  Also it did drag a bit in some spots.  There's an insane amount of focus on food and cooking and I was wondering if the author was just hungry every time they wrote because we pretty much moved from one meal to another, from one crop staple to another and it took a long, long time for the plot to get moving.

So yeah.  Cute, fun story that I really enjoyed and more respectful than most of these novels towards its female cast.  Dragged a bit in some spots and I kind of wish I hadn't read the extras because they undid some of the things I enjoyed, but I would still definitely recommend it.

Edit upon reread: there is slavery in this and honestly Zhou Ji's behavior can come off as a bit manipulative.  He has his own reasons and I didnt overly mind but ymmv on how harmful it is.