What does it mean to pity countless Shen Lang's money?

It means, it's a pity that these elm pods are small and light, and they taste terrible, just like Shen Lang's money in the Jin Dynasty. From Chao's Refugees, the whole poem is as follows:

refugee

Where is Yan? Northern Song Dynasty

Life does not revive the mulberry field, and the earthen pot basket stops by the road. Picking green pods in the elm garden at dusk, I pity countless Shen Lang's money.

It means that refugees can no longer make a living by planting mulberry people, so they put crock baskets on the side of the road. It's getting late, so I have to go to Elm Garden to pick green pods to satisfy my hunger. I feel sorry for these elm pods. They are small and light, and they taste terrible, just like Shen Lang's money in the Jin Dynasty.

Extended data:

Shen Chong was born in a noble family in Jiangnan. He fought in his hometown of Zhejiang, and he created the folk "money". This kind of money is usually seven and a half cents and weighs three and a half baht, but Qian Wen said "five baht", which shows that the money maker has good intentions; Its characteristic is that the color of money is blue and white, and there is a hidden Guo. The production process is die-casting, which is light and small, like catkins and elm pods. Elm has very little money. The author refers to elm pods with Shen Lang's money, expressing that refugees have to pick up small and unpalatable elm pods to eat, which shows that they lament the tragic life of refugees.