Lu Yuanjiu put forward the view that "99 points is not a passing grade". This famous saying is widely circulated in my country's aerospace industry.

“For God’s products, a score of 99 fails, which is equivalent to a score of 0. A score of 100 is required to pass, and if it passes, it will be judged as good or bad.” Lu Yuanjiu said.

In 1996, the Long March 3B rocket failed to launch for unknown reasons. As the person in charge of inertial devices used in rockets, 76-year-old Lu Yuanjiu rushed to Xichang.

In the next few months, he went through layers of analysis like peeling off cocoons, and finally found a small "golden thread" among the countless clues - a two-way thyristor. That's the crux of the matter. The following year, the Long March 3B rocket was successfully launched.

As a result, the famous saying above is widely circulated in my country’s aerospace industry.