2, the shape of the edge: the edge of the hat walnut is generally larger and thinner. The edge of the official hat walnut is "thin and narrow" from the front, and the downward slope from the sharp part is larger, and the downward trend is more obvious.
3. The official hat walnut is a large series of wenwan walnuts, one of the "four famous kernels" (tiger-headed walnut, lion-headed walnut, official hat walnut and prince-capped walnut), and it is also a treasure in wenwan walnut. The so-called official hat is named after the long shape of walnut, and the shape of walnut grain is like the official hat of ancient officials, so it is named.