Su Yunjin thought to herself that her household consumed a lot of grain and, with two men, fifty catties of grain wasn't too much, so she bought fifty catties.
But it was too much for her to carry, and even with all her strength, she only managed to get it to the tofu shop's entrance.
Seeing the tofu shop reminded Su Yunjin that her husband had praised their tofu as delicious just yesterday, so she went over to ask if there was any tofu left. Fortunately, there was one piece left. Knowing how popular the tofu was, she quickly bought it and asked to leave the grain there for a while, planning to come back for it after delivering the tofu home.
As fate would have it, she ran into the proprietress, a woman with a 'warm heart,' who offered to help deliver the grain to Yunjin's home.
Unable to refuse such generosity, the scene from just before unfolded.