Sheng Tang didn't explain to him.
Because she only had a half-baked understanding of past events, mostly based on her own guesses.
She didn't plan to find out more either.
She finally had a warm home.
Her grandmother was so wise and could cook all sorts of delicious dishes; her parents were noble in character, knowledgeable, and open-minded; her younger brother was considerate and well-behaved, treating her with genuine care.
Having such a family was practically the result of immeasurable good luck accumulated over eons of cultivation.
She didn't want to change anything.
"I don't know either." Sheng Tang smiled, "They're just insignificant people."
She then asked Gu Shiting if anything interesting happened today during New Year visits.
Gu Shiting recounted everything to her.
The New Year visits were nothing special, mostly everyone tried to avoid him and stayed far away.
He talked a lot with his grandfather.