Old Chinese Iteration Mark

It tells you to repeat the character immediately before it. In a transcription, 水𖿣 stands for 水水. When each character in a two-character sequence carries the mark, as in 玄𖿣牝𖿣, read the whole sequence twice: 玄牝玄牝.

That makes 𖿣 an instruction in the writing, not a number or a pause. It saves writing repeated characters while preserving the intended reading.

Why was the old Chinese iteration mark made?

It shortened repeated writing in ancient manuscripts. The earliest documented examples of this form are in texts on silk, bamboo, and wooden slips from the Warring States period (475–221 BC), the Qin period (221–206 BC), and the Han period (206 BC–AD 220). The mark let one visible character stand for the next occurrence.

The function stayed repetition, but the convention changed. Later handwritten examples use a related double-dotted form, and later Chinese print uses other shapes; this encoded character is retained so scholars can transcribe historical texts without silently replacing their marks.

In vertical transcription, the mark sits at the upper right of the character space; in horizontal transcription, it sits on the baseline. Modern presentations may draw it at full size, so position and scale can reflect the edition rather than a change in meaning.

Can I use it in ordinary modern Chinese?

Usually no; treat it as historical transcription notation. In ordinary modern Chinese, write repeated characters out unless deliberately reproducing an older source or discussing old handwriting. This encoded form remains so scholars can transcribe historical texts faithfully.

Sending it in a normal chat can signal an archaic or specialist register. If clarity is the goal, spell out the repeated characters; use 𖿣 when preserving the historical notation matters.