```
"Ss... Ss..."
The insulating material around the Progress had not only blocked the high temperatures but also had some additional benefits, such as soundproofing.
So although Zhou Rui could feel the increasing G-forces, the loudest sound he could hear was the life-sustaining system ventilating air within his spacesuit.
After over eight months of scientific training, Zhou Rui's mindset had become as steady as his age.
He even leaned slightly to the right to get even closer, allowing his arm to touch the trembling cabin wall, feeling the pulse of the rocket engines as they ejected fuel.
He knew that each engine below him had a turbine pump with a power of several hundred thousand horsepower, and rocket engines were the most primitively violent and aesthetically beautiful things.
The portholes of the Progress were like windows battered by a stormy night, producing rhythmic and clear tremors.
