In the last days of November, Li Zheng once again devoted himself entirely to the embrace of chemistry.
He could feel the path forward gradually narrowing.
It was almost impossible to find any widely accepted textbooks or exercise problems.
More often, he would proactively seek textbooks on undergraduate and graduate studies based on the syllabus, and with practice problems, each one solved was one less available.
If he dug deeper into his studies, it would involve research papers.
For example, the reverse synthesis problem of (+)-Nakadomarin A set by Zhou Yi was not from any textbook but from a prize-winning paper published over a decade ago.
Li Zheng couldn't help but think that Shi Yang had stepped into the realm of paper-based learning a long time ago and had even published some minor papers through unofficial channels.
This level, it seemed, was perhaps the end of basic studies.
