Transmigration + Tang dynasty + Anxi Protectorate + multiple heroines + political intrigue + white-haired soldiers
Good news: Guo Zhen has transmigrated!
Bad news: He has become a hostage sent by the Anxi Protectorate to the Uyghur royal court.
Fortunately, Princess Xian'an, sent by the Tang dynasty to marry into the Uyghurs, arrives at their royal encampment. Guo Zhen seizes the chance to escape his fate as a hostage and makes it back to Anxi.
From then on, Guo Zhen drives back the Uyghurs in the east, repels the Arabs in the west, resists the Tibetans in the south, and seizes the Karluks in the north. He rebuilds the Great Tang, earning the title of Heavenly Qaghan from all under heaven!