What is the word "nothing" above and "four points of water" below?

Xi, pronunciation: qi, radical: external strokes: 4 Total strokes: 8, five strokes 86:AQOU five strokes 98:AQOU Cang Xie: MUF, stroke order number: 15354444 Four-corner number: 1331 Unicode:CJK unified Chinese character U+781 sound the same as ". "Qi" is innate, and "Qi" is acquired. In traditional Chinese medicine, it refers to the most basic energy that constitutes the human body and maintains life activities, and also has the meaning of physiological function. In the terminology of traditional Chinese medicine, shua is used together with different words to express different meanings, such as shua of five internal organs, shua of six internal organs, shua of meridians and so on. There is a saying in Taoism that "one brush melts into three cleanses". In geomantic omen, shua is a stream of consciousness and a state of field. Although "Qi" is often written in TCM and Feng Shui works, it should actually be the concept of "shua". In health care, "Shua" is a kind of healing energy, which exists in an endless energy flow among all things in the universe. In qigong, breathing, induction, and meditation, it is the energy flow that is emphasized. From the mutual coordination of action and consciousness, it can heal the human body and improve health.