《汉字解码学》71 “琮”是祭祀礼仪的礼器 "Cong" is ritual ceremonial ritual.

71  “琮”是祭祀礼仪的礼器.
琮  琮是形声字.玉为形符,宗为声符.《周礼·大宗伯》注:“琮八方,象地。”琮是形的外内圆(八轮)的玉质的礼器,用于祭地.
琮  ( 名)Cong

<维基百科>资料:琮是中国古代用于祭祀的玉质筒状物，最早的玉琮见于安徽潜山薛家岗第三期文化，距今约5100年。在玉器中，琮是用于祭地的玉器，《周礼·春官·大宗伯》记载“以玉作六器，以礼天地四方：以苍璧礼天，以黄琮礼地，以青圭礼东方，以赤璋礼南方，以白琥礼西方，以玄璜礼北方”。

琮的外型状似笔筒，外型方内洞圆，至乾隆皇帝时期出土时都还无人晓得用途，乾隆自行考证认为是古人搬运重物用的配重品，还自行取名“杠头”并加装铜内胆作为笔筒和宫廷插花花瓶，直到乾隆去世90多年后才考证出是礼器琮。

71 "Cong" is ritual ceremonial ritual.
Cong is a phonetic character. Jade for the character, were the sound symbol. "Zhou Zongbo" Note: "Cong all directions, like the ground." Cong is the shape of the inner circle (eight) , For the offering.

<Cong Wikipedia> Information: Cong is the ancient Chinese for the sacrifice of jade tube, the earliest jade Cong in Anhui buried hill Xuejiagang third culture, about 5100 years ago. In jade, Cong is used to sacrifice to the jade, "Zhou Chun official Dazong Bo" records "to jade for six devices to the ceremony to the world Quartet: Cangbigeli ceremony to Huang Cong to Li Gui Li The East to the red Zhang Li to the south, to the white hue ceremony to the West, to Xuan Huang North ".
Cong appearance looks like a pencil, shape round hole, to the Qianlong Emperor period unearthed when no one knows the purpose of Qianlong self-examination that is the ancients handling heavy objects with heavy goods, also called "bar head "And the installation of copper liner as a penholder and palace floral vase, until the death of more than 90 years after the Qianlong textual research is a ritual device Cong.