Please send me all the novels that have Dongting Lake or Dongting Lake in their names!

I forgot the name of the protagonist. He was selected by a company to enjoy a chance to enter the ancient times. He asked to send him to an extraordinary and not rich era. However, he was sent to the palace to be the emperor. Although he was the emperor, he did not have the imperial power. Moreover, the company would give him a system bodyguard. This bodyguard would only save him when he was in danger. This bodyguard would not help him save others. As long as he helped him save others. The bodyguard of this system would not have any martial arts workers. Finally, the daughter of the company's boss also entered his era. She asked for a new bodyguard for him. However, the protagonist already had a friendship with the bodyguard. Therefore, he did not change. The protagonist took his wife, which was the empress, bodyguards, and some people out of the palace and did not become the emperor. I beg everyone. You must help me find this novel. The name of this novel. I remember that there was a word at the end of it that had Dongting Lake or Dongting Lake. Didn't you see the content of the novel I was talking about? I want to transmigrate and take a closer look at my content before sending a 'thank you'.