Cantonese Explaining Feng Shui Books in Qing Dynasty

I don't think so. It is estimated to be close to the official language of the Ming Dynasty. Mandarin is the product of the mixture of Manchu, Mongolian and other minority languages and Chinese in the later period. When Cantonese was the official language, it was already a matter of the Qin Dynasty, and it only existed as a dialect after the Tang Dynasty. So Chinese at that time should not refer to both.

The official language of the Ming Dynasty was Jianghuai Sub-dialect, also known as Nanjing Mandarin. Because a large number of people in the Central Plains moved south after the May 5th Rebellion, the center of Chinese civilization also moved south. However, after Manchu entered the customs, in the process of learning Chinese, because of physiological habits and other reasons, they learned neither fish nor fowl. For example, Manchu compatriots, because their long tongues are upturned, have turned many sharp sounds in Jianghuai sub-dialect into group sounds, which greatly hurt the richness of China language. After the Manchu occupied Beijing, a large number of Han Chinese were driven out of Beijing, and the children of Eight Riders occupied their houses. Chinese transformed by Manchu compatriots has gradually become the common Chinese in Beijing and Liaoyang. In the mid-Qianlong period, it replaced Jianghuai sub-dialect as the official language of China.

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