According to legend, what is the anecdote of Zhang Jiuling and Nanshan Jiang?

According to legend, anecdotes about Zhang Jiuling and Nanshan Ginger are as follows:

It is said that in Yifeng, Tang Gaozong, for three years, the mother of Prime Minister Zhang Jiuling was pregnant for ten months in Shixing, and she was still childless. Her father was very worried when he saw his wife's thick yellow color. When he was in trouble, his father met an old gentleman who was seeing a doctor and telling his fortune. After the diagnosis, the old man told his father: "it is spleen deficiency and damp heat, and qi and blood are insufficient." You must take Nanshan ginger brown sugar soup and drink it for seven days the next day after delivery. " In addition, "the fetus in the womb is an extraordinary person. There is no room here. You may have to be born in a big place."

Hearing this, the Zhang family was relieved and moved to Shaozhou. A few days after Zhang Jiuling was born, his father was shocked to see that his wife was still a little pale and weak, that is, he asked relatives to go back to his hometown to get ginger, and then his beloved wife was ruddy and full of color. Decades later, due to Zhang Jiuling's contribution, Nanjiang and Brown Sugar, which were endowed with unique effects, were named Gongjiang by the emperor.