"...Thus, we have proven that for any even number greater than two, it can be expressed as the sum of two prime numbers."
When Xiao Yi wrote the words "Proof Complete" on the small blackboard, he turned around, faced the audience, and smiled faintly.
"Three hundred years ago, that letter sent from Moscow to Berlin drifted along the river of history. It stumped Euler, passed through Riemann's hands, and trapped Gauss."
"At the International Congress of Mathematicians in 1900, Hilbert raised it once again. It then witnessed two world wars, the unceasing changes of the times, and the progress of scientific research in China."
"At last, the question in that letter has received its answer today."
"Although those people from the story can no longer know the final result, thankfully, so many people are still here today to witness it together."
"Of course, this also proves one thing beyond doubt: no matter how difficult a problem is, it will eventually be solved as time passes."
At that point, Xiao Yi paused, then addressed the people present. "That concludes my presentation, and naturally, my defense as well."
"Now, I invite the defense committee members to offer their criticism and guidance."
The audience seemed to awaken from a dream.
So, this presentation had finally ended?
Well, there was still the defense session.
Thus, tens of thousands of eyes turned toward the five academicians seated in the first row.
Then Hu Guangde, the chair of the defense committee, spread his hands and said with a cheerful smile, "What is there to criticize or guide? This is absolutely the most incredible defense I've seen in all these years. We should count ourselves lucky if you don't come knocking on our doors one day with our old papers in hand to criticize and guide us."