I carry a space ring: Travel back to 1939

Gu Wenxuan, a failed online writer, died suddenly while writing online articles in the middle of the night. Then he traveled back to the Republic of China, but he was very sad. 1| He traveled back to the body of a detective. He was very depressed and decided to be a good person. He wanted to completely change the image of the original owner in his mind, but it was difficult to be a good person! So he shuttled back and forth between the Japanese army and the Military Control Commission, and many ridiculous things happened! ...