2. Sound and sound are words of understanding. Jun, the inscription in the Western Zhou Dynasty starts with the word "even". The word "Lian" in bronze inscriptions is the ancient word "ten days", whose original meaning is ten days, so it is beside the sound, indicating the sound; The two points in the middle ("land") are like cakes made of metal materials, representing meaning. The words "even", "give a even gold" and "hundred even \u 100" in the inscriptions of the Western Zhou Dynasty all refer to the weight units of raw materials for making bronzes. Bronze inscriptions use "gold" instead of "Lu", which shows that it is related to metals. During the Warring States Period, the word Jun originated from the sound of the Book of Jin and was inherited by the ancient Chinese prose Shuo Wen Jie Zi. Generate "even number" first, and then generate jun and _. The original meaning of the expression is the same, all referring to the weight unit of metal. The seal script "Jun" is actually a symbol from Jin to Lu.