《农桑辑要·播种·收九谷种》
《师旷占术》说：五木是五谷的先兆，想要知道五谷收成，只需先看五木。
《师旷占术》曰：五木者，五谷之先；欲知五谷，但视五木。
The book "Shikuang Zhan Shu" says: The five woods are the harbingers of the five grains, and if you want to know how the five grains will grow, you only need to look at the five woods first.