Cong

It names the cong, an ancient jade ritual object.

A cong is a hollow jade cylinder with a square outer body and a round opening. Examples from China's Liangzhu culture date to roughly 3200–2000 BCE; those dates belong to the objects, not the first written appearance of 琮. Their elaborate carving and placement in elite burials suggest ritual and status roles, though the exact rites are unclear. Liangzhu burial sets also pair cong with bi (flat ritual jade discs) and yue (jade axes), keeping ritual and military authority distinct.

Was 琮 originally for Earth?

That is a later interpretation, not a proven original purpose.

Later Chinese ritual texts assign yellow cong to rites for Earth, and the round opening within a square exterior invites a “round heaven, square earth” explanation. This is an influential reading, but Liangzhu burial evidence establishes ritual and status uses; it does not establish that Earth was the object's original purpose.

What does 琮 mean in a message?

Treat it as a rare term or name until context clarifies it.

If someone sends 琮 alone, ask what they mean rather than assigning it a shared mood. In Chinese compounds, 玉琮 names the jade object, while 琮璧 can refer to ritual jades and, in literary usage, precious things. The character points to subject and register more reliably than to one particular emotion.