Lin Jun, an ordinary young man who is obsessed with history, lives a simple and regular life. He shuttles between his home and the library every day, diving into the vast sea of historical classics. He is especially fond of the history of the Qianlong period of the Qing Dynasty. That night, it was dark outside the window and everything was silent. Only the light in his room was still on. The table was piled with yellowed ancient books and papers filled with notes. Lin Jun rubbed his sour eyes, steeled himself, and continued to study the historical materials in his hand about the economic changes of the Qianlong Dynasty. Suddenly, a strong sense of dizziness hit him, and a dazzling bright light suddenly flashed before his eyes. Then there was a "buzz" in his head, and his consciousness receded like a tide, and his whole body fell into endless darkness.