Wedge·Green light appears, blood arises in the night
The story begins in the thirty-seventh year of peace in the Dajing Dynasty. The border is not at peace, and undercurrents are surging in the court. The Shen family has guarded northern Xinjiang for generations and is the only "national general" in Dajing. The head of the family, Shen Cang, is an upright official, runs the army strictly, has a large number of troops but never forms a clique, and has won the hearts and minds of the army and the people. Shen Jinghan, the legitimate son of the Shen family, was extremely talented since he was a child and had mastered swordsmanship. He joined his father in battle at a young age and made great achievements in battle. He was known as the "Jade-faced Major General" and was the most dazzling young man in Dajing.
At that time, Shen Jinghan was high-spirited and had only family, country and the world in his heart. He and Xiao Jinyan, who grew up together in the army, were as close as brothers. Xiao Jinyan was born into an ordinary military household and was adopted by Shen Cang. He ate and lived with Shen Jinghan, practiced martial arts together, and went into battle together. The two of them had sworn on the top of the Great Wall: They would live and die together in this life, and they would not let down their family, country, or each other.
The dark thread of the story is entwined from beginning to end with a mysterious existence called Qingming Purgatory. That is a legend circulated among the rivers and lakes and the military - Qingming Purgatory is not a place on earth, but a Shura field hidden in the hearts of people and deep in power. Those who enter this prison will either become a demon or die, and no one can escape intact. The ancestral sword of the Shen family, "Jingshuang", was forged by the ancestors when they suppressed Qing Ming's violent energy. The sword contains the secret power to protect the world, and also contains secrets that can overthrow the court. . . . .