At the end of summer in 2023, the sun in Beijing was like a big fireball, sizzling the asphalt roads, and the air was filled with hot air. The tourist season is in full swing, and various scenic spots are crowded with tourists from all over the world. As an experienced tour guide, Lin Yuan's forehead was covered with dense beads of sweat. The sweat flowed down his cheeks and soaked the tour guide uniform on his chest. He had just finished a tour of the Forbidden City with a group of tourists. The tourists were still excitedly discussing the magnificent architecture and historical stories in the Forbidden City, and their voices were chattering one after another.