As you request, then I won't stay too humble anymore.
Wu Zetian
LUA: Zhenuan's Reign
City's loyalty pressure decreases only 4% per tile, rather than 10% per tile.
Government plaza +2 yield to districts 2 tiles around it, instead of normally only to adjacent districts. Each government plaza building +1 Great People point to districts it affects.
Note: Zhenuan's reign was not directly credited to Wu, but to another emperor before her. Wu's reign, and also her husband's reign( in which Wu took part as acutally co-ruler in power) were considered the extension of the golden era of Zhenuan. At the era of these three emperors, Tang dynasty China's power reached its peak in controlling their neighbors, setting up its image as a superior civ to them and received tributes from them. And these 3 rulers liked to promote talented people regardless of their backgrounds so their government efficiency( and bureaucracy) also increased significantly.
UD: Du Hufu
Replace encampment. +10% of the city's loyalty pressure at built, and +extra 5% when there a unit defending it or adjacent it. Maximum +30%.
Units produced here get a +5 combat strength when within 2 tiles of her own territory.
Agenda: Grand Interrogation
Likes Civs that keep diplomatic promises and dislikes those who doesn't, or caught in spy missions in her realm.
UU: Shence Guards
Replaces Pikeman. They fight with extra strength at tiles influenced by internal loyalty pressure, the bonus strength is equal to 40% of the pressure on that tile. Can be upgraded from spearman.
Playstyle:
The great city flipper in the new loyalty system. All nations around Wu should fear their cities to lose loyalty.
And she gains strength in rising her cities loyalties, allowing her to grab those free cities easy and further threaten her neighbors.
The extra bonus to government plaza should provide extra adjacency bonus for the capital, not too powerful, but at least decent.