The Great Sheng Dynasty planted spies in Silla. Wouldn't Silla do the same by bribing Great Sheng's officials?
It was time.
Train soldiers for a thousand days, use them for a moment.
The enormous sums of money spent by Silla on those officials in the past has finally come the time for payback!
...
In the afternoon, princes, nobles, and ministers, carrying their women with imperial edicts, entered the palace one after another in preparation for the banquet.
This was a special grace of the royal family for their officials. Only those of high status and with great merits, such as princes and ministers, were qualified for it.
Not only would the Emperor and Empress attend in person, but some high-ranking concubines would also have the opportunity.
For instance, the experienced Concubine Xian and Concubine Yu, who had made great contributions by giving birth to the Sixth Imperial Prince.