How can I bow my head and serve the powerful officials?

Xie Chengze traveled into a novel about a powerful official, and became the vicious villain, the second prince, who killed his brothers and sisters, disregarded human life, and was finally killed by a sword pierced through the heart by the powerful official Shen Yuan. In order to avoid death, Xie Chengze decided to keep his head down and stay away from the fight for the throne. When it comes to court affairs, he only knows how to reply, "I don't know, ask the prince!" "I don't know, ask Shen Yuan!" "I don't know, ask the eldest prince!" But Shen Yuan and the princes looked at him with increasingly dangerous eyes - dangerous in every sense of the word. - Shen Yuan stabbed Xie Chengze to death with a sword, and then opened his eyes and returned to ten years ago. In the previous life, the second prince was corrupt and perverted the law, causing harm to the country and the people, and causing chaos in the court for nearly ten years. Shen Yuan decided this...