According to Tu Shan Rong Rong's deduction, the person Yang Qingyuan mentioned—the one who wanted to sign a reincarnation love pact with him—was, barring any unexpected events, her own Sister Yaya.
This was indeed something worth celebrating, as it showed that after all these years of living under the same roof, he had already carved out a place in his heart for her sister.
However, why did she say that this was not good news?
Chapter 359