How did Shenzhou IV set a new record for low-temperature launch in China's space history?

After the spacecraft boarded the ship, the monitoring point began to enter a busy state. At this time, the "Roy" survey ship, which is thousands of miles away, is also ready for measurement and control. They have been waiting at sea for more than a month. At this time, the ship's central operations issued instructions:

Shenzhou IV was launched at 0: 40: 03: 543. Please pay close attention!

At 2 pm local time, the measurement and control personnel of Wangyuan No.2 ship began a four-hour preparation procedure.

"Find the target!" When the order was given, Roy 2 immediately captured and measured it. On the recorder of "Roy II", a pen quickly marked the speed, altitude and inclination of the rocket, and groups of data and charts jumped into the screen alternately.

"The telemetry signal is normal!" The loud sound resounded through the computer room of Roy No.2 and spread to various radiosonde stations in Beijing and China. At the same time, Roy II sent a series of instructions to the spacecraft to complete various actions.

Under the test of rare cold weather, Shenzhou IV spacecraft set sail safely, two days ahead of the launch process, which not only set a new record for low-temperature launch in China's space history, but also created a miracle of ultra-low-temperature launch in the world space history.