This is a carving from the Guanzhong Folk Museum in Shaanxi, does anyone know what it is? What's the meaning of it? The more detailed, I will send more points to you, thank you!

This is a copy of the Luoshu. It's not quite accurate, the three dots on the left side should all be hollow, and the separate dot directly below should also be hollow.

Legend has it that in ancient times, when Fu Xi's, the Yellow River in the territory of Mengjin County, northeast of Luoyang, a dragon and horse floated out, carrying the "river map", and offered it to Fu Xi. Fuxi according to this and evolved into eight trigrams, later for the "Zhouyi" source. According to legend, when Dayu was in his reign, a divine tortoise emerged from the Luo River in Luoning County, west of Luoyang, carrying the "Book of Luo" on its back, and offered it to Dayu. The turtle carried the "Book of Luoshu" on its back and presented it to Dayu, who used it to control the water successfully, and then divided the world into nine states. Based on this, he set up nine chapters to govern the society, which were passed down and included in the book of Shangshu, named "Hong Fan" (洪范). The Yi Yi - System of Rhetoric said: "The river out of the map, Luo out of the book, the sages then".

The graphic is as follows:

The details can be found on Baidu.