In which era was Zhang Juezheng, the author of Aizhongyangzhai, a person?

Zhang Juezheng of the Qing Dynasty

Zhang Juezheng was born during the Jiaqing and Daoguang years of the Qing Dynasty. His native place was Hengshui, Hebei Province. When I was young, I lived in a bad place in the east building of my home, which caused me to suffer from diseases for several years. Treatment by good doctors was ineffective. Fortunately, I received the guidance of a Feng Shui master and corrected the east building, and I recovered without medicine. From this, I deeply realized that the Feng Shui of the Yang house was more important than the Feng Shui of the Yin house, so I studied with a teacher, collected various Feng Shui classics, and studied diligently for decades, eventually becoming a Feng Shui master. The houses he designed are all effective and well received by the villagers. When he was over sixty years old, he selflessly gave what he had learned throughout his life as "Yang Zhai Ai Zhong Pian" to his students.