The diagram above illustrates the relationship between the eight-sided Pa-Kua and the nine grids LO - Shu magic square. Please note that the Pa-Kua shown here places the direction of South at the top, to correspond with the number 9. This is because the Chinese compass places South at the top, and to ensure consistency and accuracy, it is necessary when relationships between symbols are being analyzed, and to comply with the practice followed in the ancient manuals. For practical purposes, however, you may use modern compasses, which place North at the top. However, it is vital that mistakes should not be made while attempting to conceive interpretation based on symbolic relationship between numbers and the Trigrams.

Note that the arrangement of the eight Trigram in this PaKua is based on the later Heaven Sequence. This is because all latter day practice of both Chinese Astrology and Chinese Feng Shui adopt this sequential representation of the Pa-Kua's Trigrams. Much of the Ganzhi system of Heavenly stems and earthly branches also correlate to this later Heaven Sequence.