Who is Jack, the king of secrets?

Chloe. According to the inquiry novel Lord of Secrets, Jack is Xiao Ke's old body double, an extraordinary figure code-named Hei Di. This novel is a western fantasy novel created by squid, a platinum writer of the diving reading group, which combines elements such as Cthulhu myth, steampunk, detective reasoning and gloomy psychology. The protagonist Xiaoke, whose original name was Zhou Mingrui, was a seriously ill young man who accidentally crossed into the steampunk world and became an extraordinary person.