Legitimately, most Xianxia ends up being a bit technological. Not because they're looking to BE technological, necessarily, but for the mixture of practicality and style.
Let's take transport, for example. Say your natural method of transport is via walking, which makes sense, as humans do that all the time. But that takes effort, so you find something to ride on. A horse could take you, but requires feeding and various forms of maintenance, right? So when you want to move on from the horse, you find something that you don't have to feed, that isn't temperamental, that isn't emotional or determined to do things on their own. Even the finest horse that never sways and listens to you all the way still smells, still requires things, and will eventually affect the curve of your body as you sit on it.
But what about movement for this new thing that is no horse? Well, that takes power, no matter what. It wouldn't be able to move otherwise, no matter what it is, but let's assume you can supply that. Let's take the basic horse model and remove all the things we don't like. We don't need the mind or head getting in the way so long as we have a way to steer, so we can remove that. The tail can be removed. Suddenly you're sat astride a four-legged platform with a steering wheel. Whether you replace the legs with wheels or not for comfort on roads is up to choice, but at the end of the day you've created a wagon that you move yourself, essentially. Inclement weather is still a problem during travel, so you create a cover for the top of this thing, and for your own comfort you give yourself a place to sit. Suddenly you're driving a car.
If you want to bring extra people along, you can just expand the bed of this theoretical vehicle, giving more space to carry them, and to maintain comfort you also give them seats, whether or not they're as nice as the driver's seat.
Then, you have the consideration of crossing impassable terrain. Perhaps there's a canyon in the way, or a giant boulder blocking the road, or maybe there's just no level terrain for you to ride on. So let's remove the terrain consideration, right? Flight is perfectly possible, and it lets you get rid of the legs/wheels outside the ability to land. How you decide to start flying doesn't matter, you do it regardless, and everything else works the way it did before. You need a few extra controls at the front to manage altitude, pitch and yaw, stuff like that, but otherwise it's the same thing as you've been doing before. Your car is now a jet platform. Whether it's running on technology or floating on a bound cloud, it's a jet.
So yeah. Like I said, it's 100% practicality as the reason why this stuff turns into "technology". We developed our tech the way we did in the real world because it's the practical direction to take these things to benefit our necessities. If you want to transport numerous people across long distances without worrying about terrain, you make a closed platform that has space for them as the transport. A plane is simply where that idea lands.