The banks of the Yangtze River Lower were all striving for economic progress, engaging in construction. Building materials like yellow sand and stones were in high demand and short supply.
It's somewhat ironic to say, but I found out this morning that the construction units building roads in the development zone have all been purchasing sand from those shipmen on the river recently, even the yellow sand used in the Jianghai River Harbor construction project was bought directly from the same group.
Han Xiangning, having experienced the first "Eel Fishing War," was well aware that her junior was determined to deal with those sand miners, and was gearing up for a "Sand Mining War."