Hexagram 42 in the received order of the Zhou Yi is Phong Lôi Ích (益, Increase): upper trigram Tốn ☴ (Wind), lower trigram Chấn ☳ (Thunder); the six lines from the bottom: yang, yin, yin, yin, yang, yang.
Upper trigram
Tốn ☴ (Wind)
Lower trigram
Chấn ☳ (Thunder)
Six lines, bottom up
yang, yin, yin, yin, yang, yang
Inverse
32, Lôi Phong Hằng
Reversed
41, Sơn Trạch Tổn
Nuclear
23, Sơn Địa Bác
Numbering follows the received Zhou Yi (King Wen order). The I Ching is an ancient work of philosophy.
Shan Ze Sun, hexagram 41 of the I Ching, holds that what is below decreases so what is above gains. Its Judgment, Image and six line texts are covered here.
Hà Lạc lý số casts a hexagram from the can chi of a birth date: the number tables, the 25 and 30 reductions, and a worked example from Học Năng's book.
Tiểu Hàn is the 23rd of the 24 solar terms, at solar longitude 285 degrees. It starts on January 5 or 6, opens the Sửu month and lasts about 14.7 days.
Updated 16 Oct 2026Calendar and astronomy
I Ching hexagram 42: Phong Lôi Ích (益, Increase) | Nhật Nguyệt