The reason why the Yuwen Clan was eager to advance Yuwen Chiwei to Seven Tails was due to this. It was only because Lady Biliand hailed from the Grade Four Shangguan Clan and had the backing of the Shangguan family, which deterred other Prominent Families, that they could barely maintain their position. Otherwise, Yuwen Chiwei might not have even survived until reaching Seven Tails.
Even Wang Shouzhe relied on having the Enlightened One from Tianhe and Wang Liyao, the public face of the Great Heavenly Proud, to deter other Prominent Families from messing around, allowing him to boldly develop the flying carriage business and other industries and rapidly accumulate wealth. Otherwise, the more money he made, the faster he might have died.
The plans in the North Peace defense were also feasible only with the endorsement of the Imperial Household. Otherwise, a Rank Six Prominent Family possessing a massive amount of wealth would simply be courting death.
