China operates at the edge of space and sees a elliptical curved horizon, exactly what one would expect when looking down at a large flat circle. If the earth were a globe all curvature seen from the edge of space would take the form of an arc of a circle. Chinese images show an elliptical curved horizon. Therefore they are looking down at a flat circle. Therefore China is not in the Conspiracy.
Only the US operates at altitudes necessary to discern whether or not the earth is truly a globe. The NASA Conspiracy is only as old as the space race. When the mankind first attempted to venture into the heavens in preparation to land on the moon they found that they did not have the technical prowess to do so, and so they faked it entirely to keep the trillions of space race dollars rolling in. There was also a militaristic need to appear capable of getting into orbit. Promises had been made, trillions had been invested, contractors had a job to keep, and a nation had a Cold War to wage. It takes little effort to see that this type of environment was a prime candidate for the birth of the Conspiracy.
Mankind already erroneously believed that they were living on a globe, and so it followed that the Conspiracy chose the globe as its model for the earth. Unfortunately, as the Flat Earth Society has shown on numerous occasions, the Round Earth model does not match up to reality. It's a weak hypothesis and nothing more, which sprung up two thousand years ago, based entirely on sinking ships and other such rubbish. It's a sad state of affairs that the globe earth model has been passed down through the generations, brainwashed into the populous from the age of three.
Dr. Samuel Birley Rowbotham has shown us time and time again that the Round Earth model is based on data force fitted into a model so flawed that it takes only a look across a body of water and a little trig to disprove it entirely.