This may be a hair off-topic, but I seem to recall reading <i>somewhere</i> that the Manchurians liked the rest of the world to but out of their business along the Manchurian Arm, but in light of the Melbourne Accords (to which, IMTU, they aren't a party) they can only do so much.
So, rather, the Manchurians offer huge subsidies to smaller countries (Greece, Turkey, the Philippines) to build outposts on Chengdu/Epsilon Indi in exchange for agreeing to build no other settlements along the Manchurian Arm. This makes Chengdu, IMTU, a very metropolitan planet with a great deal of growth potential, and a lot of third-tier political intrigue.
I once had my characters involved in an effort to foil a blackmail attempt against a candidate standing in a Greek parliamentarian by-election (which, due to political jerrymandering, was a district which stretched from suburban Athens to deep space).