Did Jia's father cheat?

No cheating. Jia Yu was born in Zhengzhou on 1992, and his mother died unexpectedly on 1993. Jia's father was afraid that he would be sad, so he kept the news of his mother's death a secret. 1996, Jia's father brought him a gentle stepmother, who got married after his mother died, so we can know that this is not an affair.