C2274 2223 family of xuanshi!
For example, in the current Old Master Ruan, if it wasn't for him being smarter than others, being so astute, thinking that he would be dead for sure due to Ruan Suixin.
Children were all very smart. They had good genetic inheritance, plus the elders' education about infection and their own comprehension ability.
For example, whether it was Ruan Suixin or Yin Liuli