Across the vast land of Jiuzhou (the Nine Provinces), flames of war and beacon smoke rise on all sides!​ Amidst the chaos of jianghu (martial arts world) and imperial courts, Buddhist sects select emperors on behalf of Heaven, while imperial dynasties wage endless conquests.​ Here lies Chuan Ying, the legend who can shatter the heavens with a single saber; and there stands the mysterious old man, whose swordsmanship dominates an era, making defeat an unattainable feat.​ The supreme grandmaster of Taoism imprisons himself in the Shijue Pass, deciphering the secrets of life and death.​ Countless legendary figures, each overshadowing an entire era, converge in this single lifetime—their brilliant age illuminating the annals of eternity.​ On this boundless land of Jiuzhou, who will ultimately hold the reins of fate?​ Chu Xiao accidentally becomes the Song Clan Lord of Lingnan under the Great Sui Dynasty.​ And he obtains a cheat ability—the Sign-In System.​ 【Ding! Congratulations to the Host for signing in. Reward: The Six Sword Slaves.】​ 【Ding! Congratulations to the Host for signing in. Reward: Liusha·Nilui Sha (Quicksand·Counterflow Sand).】​ 【Ding! Congratulations to the Host for signing in. Reward: Seven Thousand Snow-Dragon Cavalry.】​ 【Ding! Congratulations to the Host for signing in. Reward: Innate Qiankun Skill.】