Having such a plan was also for the sake of the Princess Consort so that she would not have to worry about how to bring back the Commandery Princess.
Another reason was fear that, in case the Princess Consort, missing her daughter too much, could not help but reveal the Commandery Princess's identity in front of the Prince, then the entire Liu Family, along with the Princess Consort, would probably be doomed. She absolutely could not stand by and watch such a thing happen.
As long as the Commandery Princess was promised to the Fourth Son as she intended, even if they could not marry due to their age, they could still bring the Commandery Princess to the capital city under the identity of his fiancée's family to be raised.
By then, as long as the Commandery Princess stayed by the Princess Consort's side, the Princess Consort's heart would be settled, and naturally, she would not have so many frightening thoughts.
