First of all, Shenzhou-9 didn't throw away the propulsion module when it took off, but the propeller of the launch vehicle. Shenzhou-9 was composed of a return module, an orbital module and a propulsion module, and needed to be propelled when it returned. As for not seeing it, maybe you didn't see it clearly. The cabin equipped with solar panels is a propulsion cabin. Second, when landing, due to the high temperature generated by the friction with the atmosphere after entering the atmosphere, the signal cannot be sent out, which is technically called' black barrier', so it cannot be broadcast. Three, about 5 ~ 65438 00 meters per second, buffer the engine to 65438 00 meters per second after ignition. Fourth, helicopter search and rescue first finds the target, and then there is ground search and rescue. Fifth, it is not "one less and one horizontal", but a symbol of China's manned spaceflight project. I think CC is short for China and Escort.