Spoilers: Character background and the compass campaign premise; no quest or campaign ending.

The ruler of the Central Provinces
Yuan Bo, the Jade Dragon, rules Cathay's Central Provinces and administers Wei-Jin. The visible work of government is one part of his authority: he also leads the Astromancers of the Celestial Court and commands spies who identify threats within the empire.
Warhammer Community’s June 2025 history names Yuan Bo among those five active children, with Miao Ying and Zhao Ming. The Celestial Dragon Emperor and the Moon Dragon rule from Wei-Jin. His own authority, in the account already given to the Central Provinces, is administration, the Astromancers, and the spies who look for threats inside the empire.
The Emperor's executioner
His duties extend to enforcing the Emperor's will. Bureaucracy, magical skill and personal violence belong to the same ruler. His siblings can see an administrator, while those targeted by his agents encounter a more severe exercise of power.
The compass expedition
In Total War, the Emperor's plan sends Yuan Bo to establish relays for the Jade Compass. Immortal Empires places his expedition in Lustria, with an early decision about retaining his distant holding at Shang-Wu. Those objectives supply a campaign premise; the wars and alliances that follow depend on the player.
A February 2026 Community article on Arcane Journal: The Breaching of the Great Bastion describes the Wu Xing Compass as a device in the Celestial Palace, used by the dragons to discern and manipulate the flow of magic. That palace device is the Old World article’s compass. The relays Yuan Bo is sent to build are the campaign’s objective.
Yuan Bo: gameplay and availability · More character stories
Sources
- Yuan Bo – Shadows of Change — store.steampowered.com
- Shadows of Change DLC — warhammer-community.com
- Old World Almanack – A short history of Grand Cathay — warhammer-community.com
- Old World Almanack – Return to Grand Cathay as the Great Bastion faces peril — warhammer-community.com
- Immortal Empires DLC Ownership Guide — support.sega.com