Divide gold is a commonly used term in China Feng Shui, which is used to determine the exact tangent position of Yin and Yang.
240 cents: mainly refers to the line position of sitting on a mountain in the 240-degree division, which is the detail of determining the sitting degree of sitting on a mountain in Kanyu.
Li Shi's poem "Divide the Gold" said: "First set the meridian on the hill, and then compete with the middle needle; More than 378, don't talk to the teacher. " Here, Sanqi and Barr are talking about the use of 240 cents, and 37 cents and 28 cents belong to Du Ji cents.