What is symmetry and balance in the essence of Feng Shui?

Symmetry and balance. According to China's ancient geographical thought, the organism is symmetrical and balanced, the four elephants (Qinglong, Baihu, Suzaku and Xuanwu) are symmetrical, and the two devices (Yin and Yang, North and South poles) are symmetrical, so the design and layout environment should be symmetrical and balanced. There are mountains and waters, high and low, and the central axis and plane layout should be symmetrical and clear.