I was reading Orthodox Chinese Buddhism of Master Sheng Yen. In page 185 he said something, well, it sound funny for me :lol
"Note that the four heavens of the realm of formlessness are not
physical locations, and so cannot be shown on the chart. According to
scroll 3? of the Complete Chronicle of the Buddha and Patriarchs,
there exist countless billion-world universes. The billion-world universe we
live in is called the Universe of Tribulation, which is said to be the
shape of “space.” Other billion-world universes are said to be shaped
like a turtle shell, a swastika, a half-moon, a square, an octagon, a tower,
and other shapes."
I want to know, where does he take this in bold? What could be his source for this?
I mean, I haven't read anything like that in sutras, perhaps is some kind of Chinese folklore?