The decline of the Jiaolong clan can clearly be traced back to the disastrous defeat of Emperor Ying Long's expeditionary force.
However, based on the historical records Long Hu investigated in Beiming Fanyang, the expedition itself was merely the trigger... In truth, the Jiaolong clan of that era had been excessively arrogant and flamboyant, offending too many vassals, and the seeds of danger had been sown long before.
Emperor Ying Long chose to embark on the expedition mainly because he insisted on marrying Yin Xiaojing's daughter, but this "public opinion" came more from the "imperial clan" than from his subordinates.
According to records, many tribesmen within the clan disapproved of this marriage because Yin Xiaojing's daughter was not of the Jiaolong clan, demonstrating their xenophobia.
With such extreme xenophobia, their relations with neighboring vassals naturally couldn't be good.
