Who arranged for the emperor to pick up the children?

According to Douban official website, Zhang's husband, Zhang Zeng, was on a business trip with his colleagues in the TV series "Seeking the Roots of the Imperial Capital", asking someone for divination and saying where to find his son. So Zhang and his colleagues went to that place, and they really found a son. In fact, it is Zhang's illegitimate child. Zhang arranged for the fortune teller to say that he could pick up the child somewhere so that he could take the illegitimate child home aboveboard.