Partial, maybe help someone else:
Using @SirDerpy 's answer getting the numbers in Mandarin [5,3,20] and applying it to the rectangle's width, height, and length; and using the Pythagorean Theorem, the length of the lower left corner with Phi to the upper right corner with Pi is Sqrt(436). Also, looking at the sequence pair of numbers, there are pairs that are in Pi (3.1415926...)