Long March leads way in space station

Chinese researchers, engineers share stories of their persevering journey

Editor's note: As China marches toward its goal of building a manned space station, researchers and engineers look back on the progress in the nation's manned space program, reviewing difficulties along the road to success.

When it comes to rocket science, nuts and bolts may appear to some people to be the least-complicated parts. Wang Huiping would argue otherwise.