After "accepting disciples" became a fact, and when some high levels from the Eastern Country also prepared to come over for a "marital alliance," Lu Ping'an's mission of pacification was also considered complete.
This is a standard operation... National high levels conducting inspections around the country before a war is basic, not only to check on situations but also to appease the public and eliminate hidden dangers.
Execute those who should be executed, promote those who should be promoted, all the while communicating thoroughly with subordinates to prepare for war, so as not to be clueless when the war erupts.
"....Finally, it's completed, and the harvest is quite fruitful."