My golden finger is open

The time-traveling heroine Shen Qingyu was an old maid in her previous life. She went on 30 blind dates in her thirties but failed to get married. She died in a very speechless way. She traveled to the era and got the system. In this backward and unique era, as a police officer, what kind of life will Shen Qingyu start? Please read the book carefully. Thank you…………………………………………...