"These parts... they all look exactly alike!"
Although there were shadows, the shadows were, after all, in a state of complete assembly, with various lines densely packed and layered. To accurately find the corresponding parts in reality based on what little could be seen after the assembly was complete, that was definitely a task that could drive one to despair.
For example, there were many types of "Dou" in the assembled parts, and they also had various names, such as concentric Dou, interlocking Dou, scattered fight, and so on.
But from the outside, Li Hongyun could hardly tell any difference between them.
If he looked closer, he would see that there seemed to be a difference in size. The interlocking Dou were the longest, the concentric Dou were next, and the scattered fight were the shortest.