Last time Pakura had followed Li Fusheng to Konohagakure to help out, and upon returning, she told him her progress had improved.
Therefore, for some time afterward, Saya always took advantage of the times when Pakura and Sara were away to ask Li Fusheng to help her with work, creating a world for just the two of them.
It was just that the effect didn't seem to be very good.
Chapter 145