Qiao Nian saw it in Xie Tingyun's notebook, so when she saw that Ji Ziyin had coincidentally chosen the 'semiconductor light source technology', she especially mentioned it.
Then, she bade farewell to Feng Yu and went back to investigate this.
Qiao Nian spent three days in the archive room of the research institute to find the relevant archives of the experiment back then. Then, she brought the evidence to Martin.
However, even if she could prove that someone had solved the semiconductor light source technology 20 years ago, it could not prove that Ji Ziyin could not 'coincidentally' solve this problem 20 years later.
This was also why Martin emphasized that the evidence was not enough to prove that Ji Ziyin stole the research results.
Qiao Nian understood this.
