Pig Lian Tie is a dialect, correctly pig transverse tongue, is a pig's spleen, narrow and long, dark red in color, its cross-section is triangular, the wall is flattened, and the dirty surface forms a long ridge, the ridge has a splenic valve with some connective tissue and fat attached to it.

The spleen is located on the left side of the pig's stomach, dorsally against the kidneys and ventrally against the liver. Because it grows horizontally in the abdomen and resembles a tongue (the Guangzhou people call "tongue" "脷")，so it is called "pig's transverse tongue".

Expanded Information:

The lymphatic tissue inside the porcine transverse tongue produces lymphocytes and monocytes. In addition, it also removes senescent dead red blood cells, bacteria and foreign matter, and has the function of filtering blood. It also has the function of storing blood and regulating blood volume, and also produces antibodies.

Guangdong people's favorite use of pig cross tongue to make a beautiful soup, can be eliminated to a certain extent the fat in the body. After ingesting the human body can play a role in lowering blood pressure, lowering blood fat, and the vitamin e content in this pig even iron is relatively rich, can play a role in beauty and slowing down the aging of the body.

Baidu Encyclopedia - Porcupine cross tongue