Huajing
A city ruled by ancient rules. The centuries-old iron law is strict: "Three generations are a family, five generations are a clan, seven generations are a family, nine generations are a clan, and twelve generations are a family." At the top of this pyramid, the Lu and Lin families, as the only remaining "twelve-generation families", have the invisible rule-making power that overrides capital and power. We don't look at net worth here, only at genealogy.
Concept: Modern pure love, dual strength, sweetness