Who among the Confucian scholars in history first mentioned the concept of "Feng Shui"?

He is Zhang Zai (Mr. Hengqu), one of the "Five Sons of the Northern Song Dynasty". If we use "Feng Shui" as the keyword, we will find 2,489 entries in the electronic version of "Sikuquanshu", and the first person to mention the content of "The Book of Burial" was Zhang Zai. "Si Ku Quanshu? Zhang Zi Quanshu" says: The burial method involves Feng Shui and mountain flashes, which are completely meaningless and unworthy of consideration. In the south, "Qing Bang" is used, and it is still possible to get it. Westerners use one line, which is especially unreasonable. In the southern trial burial site, five-colored silks were buried in the ground. When they were taken and viewed over the years, the colors would not change if the land was beautiful, but if the earth's energy was bad, the colors would change. He also used vessels to store water to raise small fish and bury them for many years to predict the beauty and evil of the land through life and death. The beauty and evil of the earth can also be predicted by looking at the growth and decay of vegetation. Zhang Zai praised the southerners for using the "green bag" burial method and believed that it was reasonable to bury five-colored silk and small fish underground, as it could predict the quality of the burial site. According to the records in "Tongzhi" written by Zheng Qiao in the Southern Song Dynasty, there is one volume of "Qingnangzi Song" written by Yue family, two volumes of "Qingnang Jing" written by Guo Pu, and one volume of "Qingnang Jing" written by Yue Yang Erxian. Today we see that the Shushu category in the sub-part of Sikuquanshu contains one volume of "Qingnang Preface" and one volume of "Qingnang Aoyu". The old edition is titled as written by Yang Junsong of the Tang Dynasty, and the preface is titled as written by Qisong's disciple Yu Wendi . The book contains information about the order and reversal of yin and yang, and how nine stars turn into sunlight to distinguish the good and bad of mountains and rivers. This seems to be what Zhang Zai affirms.