My name is Meng Fei. I'm twenty years old, and I have a younger sister named Meng Shuyi, who's ten years younger than me. The two of us come from an ordinary family in a small county town. Our parents both work at a factory. My sister and I get along really well. When our parents are home, I'm the big brother who laughs and plays with her. When they're at work and I'm helping her with her homework, I become a stern, no-nonsense elder who means what he says.
I stopped studying after high school and went to work at an electronics factory in another city. The year my sister got into junior high, I promised to take her to Beijing during summer vacation. Watching the flag-raising ceremony at Tiananmen Square had always been her dream, so I quit my job. With our parents' permission, I went home and set off with her.
Something unexpected happened while my sister and I were visiting the Great Wall at Badaling in Beijing. We didn't know how far we'd walked along the wall. On the way back, we walked for ages without seeing any of the landmark buildings at the tourist site. I didn't think much of it, and my sister and I kept walking and taking pictures. It was almost dark before we realized something was wrong. The unfamiliar scenery around us left us bewildered. I took out my phone to call for help, but there was no signal at all.
Suddenly, a door appeared not far ahead of us. My sister and I found ourselves walking toward it. I held her hand tightly, afraid of losing her. The moment we stepped through the door, I lost consciousness. When I woke up, I discovered that I had transmigrated to the Tang Dynasty, and my sister was nowhere to be seen...