Fourth season of .

Zheng Shaopeng, a high school student, dozed off during a history lesson. When he awoke, he discovered that he had changed into the impoverished scholar Yang Lin and had traveled to the Danzhu Dynasty in the history textbook. Initially, Yang Lin struggled to adjust to life in the past, but when he applied contemporary ideas to create a few modest innovations, he won the villagers' affection and eventually discovered a feeling of identity of his own. Yang Lin lived through a time of both internal and exterior unrest, experiencing battles and seeing the agony of the populace. By relying on his knowledge and abilities to acquire access to the court, he eventually oversaw the Danzhu Dynasty's efforts to combat internal corruption and repel formidable adversaries.

How can the hero Fang Han use his own strength to traverse the vast fantastical world? By clinging to an unwavering refusal to accept defeat, he cracked the code of supernatural abilities and transformed his mortal body into an immortal one. Fang Han will reveal a new and prosperous world filled with immortals, demons, and mortals, along with countless innovative magic weapons. In addition, Fang Han will encounter conflicts between immortals and demons, love and hate. It will eventually lead to success.

Lin Yun, the sword slave of the Qingyun Sect in Tianshui Kingdom, after his rebirth, his aptitude with extremely poor comprehension became different. After a set of Tiger Fist, he directly broke through to the triple realm of martial arts that can become a disciple of an outside sect. However, even though he got rid of his identity as a sword slave and became an outer disciple, Lin Yun was still discriminated against by other disciples of the sect, all because of the unwritten rule of "one day a sword slave, a lifetime a sword slave"... The road to martial arts is full of hardships. How does Lin Yun constantly challenge himself, find opportunities for improvement, break the sect's grievances, rewrite the life of a sword slave, and step into the pinnacle of martial arts?