In the room upstairs.
The girl pulled out a chair from the desk and sat down boldly. Then, she opened Xie Tingyun's notebook and flipped through it page by page.
Qiao Nian also held a pen and a stack of draft paper. Upon seeing a certain knowledge point that she did not understand, she would write it down.
The notebook Xie Tingyun had given her was very rich in content. It covered almost all the knowledge points of black gunpowder, from physics, chemistry, and theory to some experimental records. The knowledge points she needed for this assessment were all in the notebook.
There was even some content that did not involve the assessment but was more meaningful and valuable.
For example, experimental data.
At first, Qiao Nian did not understand the experimental records in the second half of the notebook. Later, she checked online and realized how impressive and awesome these experiment records were.
