"Some chemical reactions take time. For example, it took me seven years to dare to say these words."
On his first day as an intern at Wutong Middle School, Lin Man noticed the taciturn senior boy.
Li Zhengnan - "C-17" is scrawled on her school uniform, and the corners of her homework notebook are filled with diagrams of precision equipment. She is always quietly sorting out the experimental equipment she has touched after class.
She only thought that she was a well-behaved student, but she didn't know that the correction papers, used chalk tips, and even the buret left by her father that she had thrown away were all treasured by the boy like experimental specimens.
When they reunited in Germany seven years later, he was already a rising academic star, while she was going through a career slump.
The identities of "teacher and student" were reversed, and those unspoken throbs finally reacted violently under the carefully calculated critical temperature.
Concept: "The essence of education is to light a flame, not to fill a container." Through the two-way growth of chemistry teacher Lin Man and genius student Li Zhengnan spanning seven years, the true value of education is explored - not in the one-way transmission of knowledge, but in the mutual illumination of souls.