This is a real American holiday, created in America. Well, there are many tribal celebrations but like Chinese holidays they are linked to the moon, to nature.Like, the first snow or Xi Wang Mu’s birthday (which will be the first New Moon in August around then. sometimes it might even come the following month. I need a calendar to look it up completely. With daily pics of the moon. It must have been really hard for our ancestors to keep track of the days and moons especially on cloudy days and foggy nights. Anyway, I thank you for keeping it going all of this time. Now we have the technology to make predictions and most are right. But the more we change the flow of rivers and rip into the earth, the more the Mother centers energy to pull us back.