An interesting concept, but I've never seen something more idiotic amongst the Chinese national SI's. The first chinese emperor could conquer the world if he had lived longer? Does this smooth-brained, soft-skulled author not know what logistics were like during Antiquity? China probably would struggle to beat Persia on terrain, let alone the endless war machine of the rising Roman Empire.
All the author had to do was shut his trap and write seriously without mentioning bullshit propaganda or showing off his complete and utter lack of knowledge. But he keeps harping on China that Chinese this every second chapter, sounding much like the rant of a resentful loser.
Another issue is the speed of his improvement. Even if he knows in what direction to improve, he's getting stronger at breakneck speed, faster than if he had some stat-grinding system. Then there's the sword intent BS. Thinking, it's just willpower and proficiency materialised... aka HAKI. Yet it's displayed as a power above haki. Basically, this whole thing is totally slop with a coat of shiny gloss on top that makes it barely readable.