I found this quote in a 1923 book from Cambridge University, with the rather ambitious title A History of Chinese Literature:
"In the Golden Age they had the two famous calendar trees, representations of which have come down to us in sculpture, dating from about A.D. 150. One of these trees put forth a leaf every day for fifteen days, after which a leaf fell off daily for fifteen more days. The other put forth a leaf once a month for half a year, after which a leaf fell off monthly for a similar period. With these trees growing in the courtyard, it was possible to say at a glance what was the day of the month, and what was the month of the year. But civilisation proved unfavourable to their growth, and the species became extinct."
It sounds like something Pablo Neruda would come up with! Accurate or not, this is why I love reading history.
https://gutenberg.net.au/ebooks08/0800151.txt