red clams have been added.

According to Compendium of Materia Medica, red potato has the functions of promoting digestion, eliminating swelling, promoting blood circulation, dredging collaterals, regulating stomach and strengthening spleen. According to legend, in Jiaoling, Guangdong, a scholar improved the porridge of Guangzhou people and cooked Sanji soup. This soup has been endowed with the implication of indicating that scholars have achieved three consecutive exam achievements (scholar, juren and Jinshi), and has become a delicious food for Jiaoling scholars to take exams. One ingredient is the addition of red clams with medicinal value and bright colors.