U+1D36C "𝍬" Counting Rod Tens Digit Four Unicode Character

U+1D36C "𝍬" Counting Rod Tens Digit Four is a historical numerical symbol derived from the ancient Chinese counting rod system, a positional decimal method used for arithmetic before the adoption of written numerals. This specific character represents the tens place digit for the number four, depicted as four vertical or horizontal bamboo rods arranged according to established conventions. It belongs to the Counting Rod Numerals block of Unicode, which was encoded to preserve and digitize these early forms of calculation notation. The character is used in scholarly work, historical reconstruction, and specialized digital typography to accurately represent the rod numeral system without ambiguity. Its inclusion in Unicode ensures that this aspect of mathematical history remains accessible for modern computing and research.