Who contributed more, Qian Xuesen or Yuan Longping?

To be honest, it's really not easy to compare, but it depends on which side to compare.

In terms of scientific and technological progress, it must be Qian Xuesen. It is because of Qian Xuesen's scientific and technological contribution that China people went into space for the first time in our country and got the first moon-orbiting satellite. In the future, our country will emigrate to other planets in the universe.

However, it is also important for human beings to fill their stomachs. However, in China, Yuan Longping can eat half full. Personally, I prefer Qian Xuesen.