Architectural geomantic omen mainly decorates and designs buildings according to China's traditional philosophy. The main idea is the balance of yin and yang and the unity of man and nature. For example, the Forbidden City in Beijing and the classical gardens in China are all good examples to interpret Feng Shui. From building site selection to interior decoration design, it is related to geomantic omen. In this respect, Hong Kong seems to have studied it more thoroughly than Chinese mainland. The ancient geomantic omen, which has been widely circulated so far, is a part of the fragrant house. If you are interested, you can read Wang Qiheng's book "Research on Geomantic Theory", which is very classic and basic, and is basically a required reading for architecture majors.
The building environment and equipment are mainly used for water heating. Responsible for the later design, planning, architecture, structure and then water heating and electricity. Anyway, this has nothing to do with feng shui research. I don't know if the answer is satisfactory ~