All Images for Trigrams, Relations and Animals when we click the branches names Wu, Wei etc.), the algorithm for the Rice Grain and Numeric Casting Method and the Twelve Stages are added thanks to Alfred Kee and his book "When I Ching Has no Text: Wen Wang Gua coins Divination".
That and all other calculations specific for here(Prosperity Index, WWG Symbolic Stars here etc.) are copyrighted by Celestial WWG and Alfred Kee (also known as AK Guru) 2019. At the same time all the code here that is shared between all bright-hall calculators fall outside of that as they are somewhat free to use. If you are unsure what falls where feel free to ask.