三足鼎立：a tripartite division between
合法继承人：the legitimate successor
中国古典四大名著：Four Great Classical Novels of Chinese literature
被誉为：be acclaimed as
这段时期的历史风云：the events in the turbulent years of that period
Back to the time of the Three Kingdoms (AD 220–280), there was a tripartite division between the states of Wei, Shu, and Wu. To further distinguish the three states from others during the same period, historians have added a relevant Chinese character to their names: Wei is also known as Cao Wei, Shu is also known as Shu Han, and Wu is also known as Dong (or Eastern) Wu. Each state was ultimately headed not by a king, but by an emperor who claimed to be the legitimate successor to the Han dynasty. Romance of the Three Kingdoms, written by Luo Guanzhong in the 14th century, is acclaimed as one of the Four Great Classical Novels of Chinese literature. With a grand total of 800,000 words and 120 chapters, the novel has depicted the events in the turbulent years of that period.