Yan Fei didn't want anyone to know he was about to leave Earth, so this spaceship adopted both radar and optical stealth structures. Even if its components were launched into space in several batches, other countries on Earth wouldn't know what Yan Fei was launching. They assumed Dream Island was strengthening its space-based weapons launch platform with the goal of deterring other countries and Ape Tribe bases on Earth.
Because they were unaware of the inside story of several rocket launch operations from Dream Island, the Western countries led by The United States of America began to have other thoughts. In their view, the Ape Tribe, though fearsome, had only one awakened chimpanzee in their Ancestrial Land and had not yet returned to the peak state of 80,000 years ago, temporarily lacking the ability to overthrow all Earth humans.
