Irritated and unkempt, grumpy and aggressive vs deserted, diligent, virtuous and receptive = age difference of X years
When Sun Yuzhe was 27 years old, his adoptive mother inexplicably gave birth to a 13-year-old nephew.
After all, Yi Yang was quite well-behaved and sensible, and could handle both the living room and the kitchen. As time passed, Sun Yuzhe felt that it would be good to have such a son.
Later——
Sun Yuzhe squatted in front of his adoptive father's grave and said with a smile: "Yi Yang is good at studying, obedient and sensible, but this little brat... Even makes plans for me."
*Nurture system/pseudo-uncle/nephew/realistic/slightly enthusiastic
Purpose: Little people grow up step by step