The interstellar conference center on Ma'ao Star, built by the people of the Jinxi Civilization, had hosted several activities of the High Governance Council. Now, as the Jinxi Civilization had almost been wiped out and its people had fled far away, it had become the venue for the signing ceremony of various civilizations joining the Iridium Star United Empire.
The signing itself did not hold any real binding power, but all 143 civilizations preparing to join the Iridium Star United Empire would adhere to Iridium Star's methods, allowing Iridium Star officials to set up embassies on the capital stars of these civilizations, and the Iridium Star officials would supervise the civilizations to reform according to Iridium Star's ways, such as implementing Iridium Star's trade rules, establishing shared technological research institutions and tech pools, and devolving military power to the Unified Empire Army.