There used to be one in my hometown (Yebukou Township, Xihua County, Henan Province). It was cut down a few years ago. I don’t know its scientific name. The tree is about a hundred years old. The tree has a strange shape, about an arm's length thick, but no one has hugged it. Its branches have many thorns, its leaves are dark green, and its fruit is bitter, sour, and astringent. The tree exists next to the Chang family's ancestral grave, and the villagers once stayed away from it.