Traveling from South to North: Start with the Police, Unlimited Sign-Ins

When he woke up, Ji Chen traveled through time to the era of traveling from south to north. He became the young policeman from a poor family and without a camera. Fortunately, he has obtained the sign-in system. As long as he completes the task, he can turn on the sign-in and obtain material rewards and skill rewards. In that era of poverty and no background, His family eats plenty of fish and meat every day, as well as white steamed buns and rice. His career is also going smoothly, and passengers on the train affectionately call him "the train grappler" No thief can escape his grasp. "What what!!!, He was promoted to the youngest police chief?"