How did Xia Ziwei's mother Xia die?

I guess Mammy Yung pushed her into the lake beside Daming Lake and drowned. Living is when Wei Zi and I were born together. I was exhausted or eaten by a monster in the lake. Maybe I was strangled by Park Erxian in a tinkling time machine. Maybe Lafayette sent someone to assassinate me. Maybe I died of illness. It is estimated that when Si Ganlong went back to die, Xia was washing vegetables and suddenly came from Daming Lake. Zhen Zi emerged and was taken away by Zhen Zi. Maybe the thief stole at night and was caught by Xia. As a result, he stole Xia back to be Xia's wife instead of biting his tongue.