In 2026 AD, Hong Kong's scientific and technological elite Long Feng encountered an accident during a quantum entanglement experiment and traveled to the outskirts of Xuzhou in the fifth year of Jian'an in the Eastern Han Dynasty (200 AD). He was rescued by Cao Cao's fierce general Xu Chu and became brothers with different surnames. Relying on thousands of years of scientific and technological knowledge and historical predictions, Long Feng offered suggestions four times to save Cao Cao's life and help Cao Wei lay the foundation. After achieving success, he retired to Xuzhou to study the method of return. During this period, he married a wife and had children. Finally, in his later years, he brought his family back to modern times, but fell into Hong Kong in the 1970s. His son Long Si grew up in this turbulent era and eventually became a legend...