There are two theories about the origin of the name "shit sugar" in the general population.
One theory is that the shape and color of this candy are very similar to dog shit, hence the name "dog shit candy".
Another way of saying it is that in difficult times, vendors pick goods and go to the countryside to exchange second-hand goods, and maltose is one of them. Poor people even used maltose to coax their children into rags, so they coaxed them into saying, "That's shit candy, you can't eat it." More people talk about it, and this candy is really named "shit candy".