What would happen if the young Qilin died at the Dragon Clan embassy?
First, congratulations in advance to the Xuanwu Clan, for plucking the fruits of victory after Qi Weihuan's fall in advance.
The Xuanwu have done nothing, yet their rivals' heir died outright.
Secondly, congratulations to the White Tiger Clan and the Qilin Clan for shooting themselves in the foot.
Without this illegitimate child, the Qilin patriarch will have to find another heir, which undoubtedly will lack legal justification.
More importantly, if the new heir has no blood relation to Qi Weihuan, then the empress Lü Ya's role would become optional at best.
Given the Qilin patriarch's perception of her, perhaps she would soon die of grief, fright, and shock due to her husband's demise.
Without the empress, even if the White Tiger Clan doesn't turn against the Qilin Clan, they certainly won't be able to maintain their original alliance, leading to a lose-lose situation.