Where is the calligrapher Liu Jingbin from, how old is he, and how is his calligraphy?

I don't know, but the hero doesn't ask the source. Everyone's calligraphy is good or bad, valuable or worthless, expensive or relatively cheap. Runge is only a reference, mainly depending on his own judgment and understanding of his calligraphy and painting, as well as the hype in the market at that time. Also, as long as the words are good and you like them, they are valuable for collection. They don't have to be famous now, but they must have their own characteristics. The calligraphy and painting of Zhu Da, a native of Badashan Mountain, lived only for food and became famous after his death. Up to now, his calligraphy and painting are all national treasures. There are too many such examples. My own opinion, please forgive my mistake!