Roaming the Heavens, Starting with Bright Sword

[A new author with a new book. Please be kind!] This is a multiverse transmigration novel whose main world combines the television worlds of "Drawing Sword", "Love in the Courtyard", "Hutong", and "A Little Woman Under Zhengyang Gate". It has multiple female leads, so please don't read if that's not your thing. After transmigrating into the body of Xu Qingyang, a young man from a family of doctors and martial artists, he carries the weight of national and family grievances as he joins the tide of resistance and enlists in Li Yunlong's Independent Regiment. With his extraordinary medical skills, martial arts, and miraculous abilities granted by the System, he becomes the "Phantom Miracle Doctor" on the battlefield, saving lives, assassinating enemy commanders, and sabotaging supply lines as he rapidly grows amid the flames of war. He crosses paths with characters from period dramas such as "Love in the Courtyard", "A Little Woman Under Zhengyang Gate", "Blood Romance", and "Hutong", then embarks on a journey through the myriad worlds: "A Step into the Past" - a world of magic - the Jin Yong series - "Snow Sword Stride" + "The Blood of Youth" - Investiture of the Gods - Primordial Chaos. As he continually combines the powers of different systems and improves himself, he creates cultivation techniques and joins his wives in pursuing eternal life, achieving true freedom and transcendence.