He Saved the Princess at the Beginning and Took Out the System with His Backhand

The modern soldier king Zhao Feng traveled back in time to the early years of Zhenguan and became a rundown settlement in Chang'an City that could no longer survive. At the beginning, we saw Princess Changle falling into a lake. She saved people with her modern first aid knowledge, but was treated as a gangster and thrown into prison. Just as he was about to lose his head, the "strongest survival system" that had been bound for eighteen years was finally activated!