When Li Nuo returned to the Li Mansion from the County Magistrate's Office, it was no surprise that Song Mu'er was already waiting for him in the yard.
"Sweet potato, sweet potato, I am a potato!"
"Potato, potato, I am a sweet potato!"
After exchanging the simple code words, Li Nuo confirmed Song Mu'er's identity.
In reality, he didn't need to exchange code words to know that it was Song Mu'er in front of him, because Song Jiaren was just next to them in the pavilion. She often appeared together with Mu'er, and moreover, since the last time, Song Ning'er had not come to look for him again.
Every time Mu'er came, she would ask Li Nuo mathematical problems.
From the initial single problem, it turned into two, then three, with the problems getting longer and more difficult.
Of course, they weren't difficult for Li Nuo, but he found it increasingly challenging to make Song Mu'er understand, which required a lot of thought.
