Modern detective Jing Tianming travels back in time to become the nine-year-old orphan Jing Ke in "Qin Shi Mingyue". Armed with a treasure trove of modern knowledge systems and martial arts theories, he was unwilling to become a pawn against Qin, nor was he willing to submit to tyranny. Under the protection of Sword Master Gai Nie, he embarked on an unprecedented "third road" - to find a way out for this era with thinking and perseverance beyond the times.
It looks good, you can take a look