This third part of the saga, which began serialization in July 2016, represents the series' final chapter. By the time the story reaches the later chapters like , the focus has shifted toward the endgame conflict against Shiro's ultimate nemesis, Sima Zhongda , who possesses the "Phoenix-Destroying Physiognomy".
The third and current arc, Ouha Rikkoku-hen , is the one you are interested in. Its title roughly translates to "The Founding of a Kingdom" or "Kingly Rule Establishment Arc". This arc shifts the focus from the military conflicts of the "Central Plains" (Chugen) to the more complex theme of building a new nation and establishing a just rule.
: Ouha Rikkoku-hen is the third major arc in Yoshito Yamahara’s long-running Three Kingdoms-inspired saga, following the original Ryūrōden and the Chugen Ryōran-hen sequel.
Keep an eye on global manga distribution apps (such as K-Manga, Kodansha's official platform) to see if they expand their back-catalog to include localized English chapters of the Ryuurouden summary of the plot