After Old Man Cao returned home, he pondered over and over again, and felt that this marriage alliance couldn't really be severed. Even if it was truly broken off in the past, it must now be restored.
However, Old Lady Cao kept reminding him that the relationship between the Cao Family and the Ye Family was going to span three generations, which was somewhat distant. Even if the two families truly interacted in the future, it wouldn't bring much benefit. Therefore, Old Lady Cao insisted on giving their granddaughter to Ye Zi'an as a concubine.
Once the granddaughter became a concubine and later gave birth to a child, the connection with the Cao Family would grow closer. As such, Old Man Cao, who was originally somewhat opposed to his granddaughter becoming a concubine, had now become completely agreeable to the idea.