A million-word serialized novel in the same genre is already available, so feel free to dive in.
In mid-1980s Hong Kong, the streets were a tangle of rival forces, and Kowloon Walled City was a den of vice.
Just after transmigrating, Ran Min woke up beside a filthy gutter, penniless and covered in wounds.
Fortunately, he awakened the Emperor's Conquest System and gained the template of Ran Min, the fiercest warrior of the Sixteen Kingdoms period of the Eastern Jin dynasty.
He rose to power in the Walled City, recruited Crow, took on Big Grizzly, built his own faction, brought the Longcheng Gang under his wing, killed the Big Boss, and recruited Wong Gau!
Before long, more and more ruthless and formidable men joined Ran Min's cause.
Beyond Kowloon Walled City, Hongxing, Dongxing, Wo Hop To, and the Number Gang carved up the city, with blades flashing and bloodshed around every corner.
Now that he had fallen into this underworld with nowhere left to retreat, he would fight his way to survival!
Starting out as a nobody at the bottom, he gathered brothers, secured his turf, and sent the entire Hong Kong underworld into turmoil.