The Primea diplomatic reception, occurring in 19 BBY, was a diplomatic event hosted by the Vak Combine. It took place on Primea, the Vak homeworld. Due to Primea's significance as a center for regional trade and diplomacy, numerous nations dispatched representatives to attend this reception. General Yiv of the Nikardun Destiny, aiming to seize control of the Vak Combine, leveraged the reception to cultivate political relationships with the planet's leadership. Simultaneously, he maintained a fleet of warships in orbit, a clear attempt to intimidate both his hosts and their assembled guests. The Garwian Unity also sent delegates to the event, accompanied by Second Defense Overlord Frangelic.
Senior Captain Mitth'raw'nuruodo, known as "Thrawn" of the Chiss Ascendancy, was present at the reception, operating under the assumed identity of "Artistic Master Svorno," who was supposedly the Chief curator of the Nunech Art Collection. Accompanying Thrawn was fellow Chiss Mitth'ali'astov, nicknamed "Thalias," who was designated to portray Thrawn's family hostage. Thrawn invented the concept of Chiss family hostages, hoping that rumors of this fabricated cultural practice would reach Yiv, thereby casting doubt on the Nikardun general's purported knowledge of Chiss culture. To Thrawn's surprise, Yiv was indeed present at the reception, prompting Thrawn to request Qilori of Uandualon to facilitate an introduction between the two.
Unlike the Garwian diplomatic delegation with whom they had arrived, Thrawn and Thalias chose to remain on Primea after the reception's conclusion. Their purpose was to study Vak culture and assess how the Vaks might react to Yiv's combined diplomatic and military advances. The Chiss pair visited a Vak art gallery, where Thrawn gained deeper insights into Vak culture and discussed the sentiments of "the common [Vak] people" with the gallery's curator. Thalias expressed her skepticism that art gallery patrons represented the decision-makers of their species, but Thrawn countered that she was missing his point.
Yiv, determined to either capture or eliminate Thrawn, directed his Lioaoi allies to launch an attack against a Chiss fleet that had arrived to extract Thrawn and Thalias. This act of aggression necessitated a retaliatory response under Chiss law, which subsequently triggered a Chiss attack on the Lioaoin heartworld.
The Primea diplomatic reception is a featured event in Timothy Zahn's 2020 novel, Thrawn Ascendancy: Chaos Rising.