The Guqin Workshop in Han and Tang Dynasties should be regarded as one of the few professional piano workshops in China that can really play the piano according to traditional techniques. It is very famous in the industry, but it is rarely sold directly to ordinary guqin lovers, so not many people know it. According to the traditional craft, it took three years for the ancients to choose materials to make a piano. Today, even with modern tools, it takes at least a year and a half. It takes a year and a half for the interior paint to dry completely, and it is safer to make a piano in two years. As for those less than one year old, it can basically be concluded that pure raw lacquer is not used, and most of them are synthetic lacquer (commonly known as cashew nut lacquer), and the process is also simplified, which usually belongs to practicing piano, and it is difficult for novices to distinguish the difference. The southern organ of Han and Tang dynasties is no worse than some famous pianos in terms of craftsmanship, timbre and painter. If you are lucky, you can meet top pianos.