"Grain coupons?"
"Why are you asking about that?"
Ai Bing was momentarily taken aback.
In her memory, that thing seemed to be an economic product of the difficult times in the past.
But now, more than a hundred years had passed since the founding of Shen Zhou, not to mention whether anyone remembered it, even if they did, what use would it be?
Could they still dig out a few from under a box to exchange with the government for food?
Zhang Ye, of course, wasn't that idle.
The thing that had been worrying him the most these days was that currency mission.
To create a brand new currency system out of nothing, the key lay in the choice of currency to serve as a general equivalent.
Past currencies like paper money and precious items such as gold definitely wouldn't work.
They were now just waste paper and trash.
And other materials that people were willing to accept, like food or medicine, due to their specifications and volume, were destined not to become a universal currency.