Jia-jing: Year 15, Month 9, Day 29
13 Oct 1536
The Emperor prepared medicine for his mother in order to stop her eyes from running, and it was found that the cones of the coastal pine (海松子) were efficacious. A command was issued to the Guang-dong Provincial Administration Commission requiring it to seek out such cones in the coastal territory of Siam and then to present them for use by the Court.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 79, page 4041