Banner Planet was originally the second planet of the First Star Field. The first planet was naturally the origin planet.
However, the status of the origin planet was very special. It was the origin of human civilization and was restricted by many forces. The few Domain Lord families of the First Star Field could not completely occupy the origin planet.
It was the same for the Jiang family.
Therefore, the Jiang family chose Banner Planet as their base of operations.
As the war between the two cities continued, after the great explosion, origin planet had completely declined. Banner Planet was now the most prosperous planet in the First Star Field.
As the number one planet of the First Star Field, as well as the cultural and trade center of the First Star Field, Banner Planet was open to the entire star field society.
All mechas and personnel could enter and leave the planet at will without any checks.