Warhammer Rebellion Begins with Warriors

It's about a soldier, Lin Shen, who traveled through time and became a warrior who had defeated the Demon King. He had full charisma but no other abilities. He spread red ideas through speeches in taverns, established the Spark Alliance, and used his charisma ability to instigate low-level soldiers to rebel? It was discovered that the nobles used the Chaos Whisperer to monitor civilians and modified it into a loudspeaker to spread revolutionary ideas? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.