Made some slight changes to Vietnam (mainly adding in passive GGs):
Vietnam (Trung Sisters)
Start Bias: Jungle
Colours: Crimson/Jade
Focus: Defense, Culture, Incentive to pick Honor
UA: One Eternal Vietnam - Each outgoing Trade Route connecting with another civilization in the empire adds +5

Defensive Strength to all cities.
City Connections to the Capital provide points towards Great Generals.
UB: Water Puppet Theater (replaces Amphitheater) - Has one slot for a Great Work of Writing. +5%

Culture and +5%

Food in this city for each Social Policy adopted in the Honor Tree.
UU: Vietcong (replaces Infantry) - Gains invisibility in jungles and a +25%

Defensive Combat Bonus when fighting against a civ with a different ideology.
It's either that or adding in a culture/GG bonus for every x amount of Defensive strength a city has.