Two Pakistani pilots are memorizing Mandarin, spinning in centrifuge drills and learning to eat, sleep and repair equipment while weightless as a decision nears on which one will become the first foreign astronaut aboard China's Tiangong space station ↧ China's space diplomacy lifts Pakistani astronaut toward orbit Two Pakistani pilots are memorising Mandarin, spinning in centrifuge drills and learning to eat, sleep and repair equipment while weightless ​as a decision nears on which one will become the first foreign astronaut aboard China's Tiangong space station.