What if Cangzhou also wants to build a port
What does this mean? Shopkeeper Hua was stunned, his expression was as dull as it could be. But soon, his initial helpless expression disappeared without a trace, replaced by an ecstasy that was difficult to conceal. He stared at Zhang Shou with wide eyes, and even his voice trembled a little: "Dr. Zhang, are you kidding? Are you serious?"
Zhang Shou knew that what others were looking forward to the most was his serious answer, so he took it seriously. However, his reaction was to laugh and said, "Oh, Manager Hua, don't take it too seriously. I was just talking casually."
Shopkeeper Hua was almost choked to death by Zhang Shou's careless tone. How could he believe that Zhang Shou was just talking casually, especially when the other party asked him why the Hua family had never engaged in maritime trade, and then asked him the reason in detail, and after understanding everything clearly, he threw out such a question, saying that he didn't come prepared... Who would believe it!
At this moment, he took a deep breath in his heart, and then forced a smile and said, "Dr. Zhang, this is not something you can joke about."
"Actually, I'm not kidding. During these days, the teacher has been discussing astronomy with me, and water management with me. He also gave me a question before, saying that I should use mathematics to calculate the siltation of the waterway on the east coast of Cangzhou. Since it involves the waterway, I calculated it to my heart's content before, and just now I just blurted out the words 'build a port'."
Using mathematics to calculate the sedimentation of the waterway on the east coast of Cangzhou? What the hell is this? Can mathematics be used in this way? Shopkeeper Hua's brows were already furrowed into big lumps, his face full of disbelief.
Zhang Shou knew that the other party would definitely react in this way, and since he chose to bring out Teacher Ge to take the blame again, he was of course prepared. He said calmly: "The Yellow River changed its course in the past and flowed into the sea from the Zhangwei Xinhe River. Later, it gradually moved south and flowed into the sea from the Huai River. The coastal area east of Cangzhou was less affected by the silt from the Yellow River entering the sea, but was more affected by the erosion of sea water and sea breeze, which is why it has become the coastline today."
"There are also people from the Imperial Observatory in Cangzhou who record the weather. There are fewer windy days in summer and winter along the coast of Cangzhou, but there are many windy days in autumn, accounting for one-fifth of the windy days throughout the year. There are even more strong winds in spring, accounting for half of the year. Such strong winds may cause the waves to carry mud and sand, leading to siltation in the waterway..."
As he was talking, Zhang Shou suddenly reached behind him, and Ah Liu, who seemed to have been dozing off just now, immediately opened his eyes, took off the small bag on his back with extremely fast speed, and took out a pen, ink, paper... and a paperweight from it.
The pen was a goose feather pen, and the ink was in a porcelain bottle. He skillfully spread out the paper on the small table beside Zhang Shou, then pressed it with a paperweight, and then dipped the goose feather pen in the ink before handing it to Zhang Shou. The whole action was familiar and gentle, and Peanut, who was watching beside him, was amazed and wanted to help, but found that he could not help at all.
Shopkeeper Hua, who was standing by, just listened to Zhang Shou writing as he said in a very calm tone: "If mathematics is to play a role in calculating channel siltation, we must establish relevant models to simulate the movement of silt in strong winds and waves, so as to reflect the laws of silt movement and channel siltation. Of course, first we have to describe the changes in waves in strong winds."