The location of the Alchemist Conference was not in Qian Country, Yun Country, or Meng Kingdom.
In short, it was not within the territory of any of the Lower Three Kingdoms.
At the border of the three countries, there was a city. This city was grand and expansive, occupying a vast area. Although it bordered all three kingdoms, it was not governed by any of them.
The city was named Black Cauldron City. The reason for this name was because from a distance, the shape of the city resembled a massive black cauldron standing on the earth.
This Black Cauldron City was a city established by the Pill Alliance, and was completely within the jurisdiction of the Pill Alliance, superior to the Lower Three Kingdoms.
The location for this Alchemist Conference was precisely in Black Cauldron City.
Similarly, as the city set up by the Pill Alliance in this location, to a certain extent, the Pill Alliance of the Lower Three Kingdoms had to abide by its jurisdiction and restrictions.
