The outline of the plot is as follows:
Sixteen years ago, the world was divided into five parts, and the blue family of Gusu, the Jiang family of Yunmeng, the Nie family of Qinghe, the Wen family of Qishan and the Jin family of Lanling ruled the world together. Only the Wen family, the other four families suffered greatly. Among many young people, Wei Wuxian, the son of an old friend of Jiang's, has a cheerful personality, met Lan Zuoji, a disciple of Gusulan who is known for his elegance, and was introduced as a bosom friend. By chance, the two discovered the secret that Lan had been guarding, and they inherited the inheritance to eliminate hidden dangers for the whole people. But unexpectedly, the man behind all this turned out to be Wen Rehan, the master of the Wen family. Many families were humiliated and joined forces to crusade against the Wen family. After the downfall of the Wen family, Wei Wuxian did not hesitate to oppose many families in order to protect the innocent people of the Wen family. Finally, it was harmed by traitors, which caused great disaster. He accidentally injured his sister Jiang, and he was nowhere to be found. 16 years later, Wei Wuxian, who had disappeared for a long time, appeared in Mojiazhuang and met his old friend Lan. Mojiazhuang's bizarre murder case is confusing. As the truth is revealed step by step, Jin Guangyao, who is behind the scenes, is gradually unable to hide his decline. In the end, Jin Guangyao died physically, while Lan Forgot to take on the mission of helping the world, while Wei did not envy and forget his own initiative, and finally became a chic world.
I hope the above answers can help you, thank you!