It's impossible to say that Di Xuan never contemplated securing his position as the heir.
However, he was more aware that whether he could firmly sit in the position of heir, become the Young Marquis, and inherit his father's title depended entirely on his mother alone.
If mom agreed to him taking that position, then no one else could take it from him; if not, he wouldn't be able to seize it even if he tried.
At present, it seemed that Prince Luo's request was less about making a demand on Dad, and more about testing mom's intentions to see how much he meant to her.
Having understood all this, Di Xuan's heart began to sink, and memories from many years ago resurfaced.
Di Yelei was somewhat distracted: "I understand, Dad is a bit tired today, we'll talk about these things tomorrow. You should go back first!"
He rose restlessly, his brow nearly knotted in anxiety.