The novel's cultivation system has not been described in detail yet, so I'm not gonna talk about it right now.
MC of this novel is cool, calm, likeable and doesn't put on any airs. He is ambitious but not reckless. He seems to be the kind of guy who always takes calculated risk and always keeps a few cards hidden so as to meet exigent cirumstances head on. He is also a decent guy, not like Fang Yuan, etc. He is a scholar before transmigration and after too. He doesn't get any fortuitous encounters or meet any great sage. He reads, understands and draws inferences from scriptures to develop his powers.
Other characters in this novel are well etched out too except his rival who is annoying. Female characters don't fall for MC left, right and centre but they are not the kind who are malicious to plot against the MC for no reason either. Maybe such characters might show up in the novel later on, considering the novel is 3000+ chapters long. In other words, this novel has female characters who behave like people in 'real life'.
Plot moves at a leisurely pace- which I believe is the reason it's not popular- but doesn't get repetitive, the author explores the various aspects of the world as the novel progresses.
The fights are grounded in the current arc but it will get Xianxiaesque in future chapters I suppose.
The world is based on feudal China with sects on end of the power balance and the Emperor on the other hand.
Overlall this is a really good novel to read, if you are tired of other cliched novels on this site but I gotta warn you that it takes time to hit the spot. If you are looking for a good non-cliched- no arrogant young masters lining up on the death queue, no fortuitous enocunters growing on rooftops, etc- novel, you should probably give this one a try.