Fantasy Secret City

Ah San, a young man with a mysterious life experience, lives in an extremely ordinary small village. He was clever and intelligent by nature, but the gears of his fate began to turn rapidly when he was eighteen years old. It was a misty morning, and Asan was preparing to go to the fields to help his parents work as usual. However, a letter from an unknown source broke the tranquility. The paper of the letter has turned yellow, and the handwriting on it is blurred, as if it has experienced the erosion of a long time. Ah San opened the letter curiously, and there was only a short and mysterious line in it: "The secret of the Dark City is about to be revealed, and the wheel of fate has already turned for you." Ah San was full of doubts. He had never heard of the City of Darkness, and he didn't understand what this letter was referring to. However, from that moment on, there seemed to be an invisible force pulling him in his heart, making him full of curiosity and desire to explore this unknown dark city. After several days of inner struggle, Ah San decided to leave the village and go in search of the mysterious dark city. He didn't tell his parents the truth, but just left a brief letter saying that he was going to have a try outside. Ah San embarked on an unknown journey, sleeping and eating in the open. He walked through dense forests, crossed fast rivers, and saw all kinds of people and things. In a dilapidated town, Asan met an elderly traveler. The old man has deep eyes