That is to say, when Lu Chen was still in the prime of his youth, the three of them would have already become gray and old.
The thought that Lu Chen might lose interest in them once they grew old filled Mu Zixuan's heart with immense anxiety.
She had always been intoxicated by Lu Chen's tender affections, believing that she had married a good Prince and that life could go on like this forever. Now, she realized that although Lu Chen was so good to her at the moment, there might come a day when he would disdain them for growing old.
Even if Lu Chen did not disdain them, the sight of their gray hair and aged appearance against Lu Chen's youthful vigor was distressing, and they would be unable to continue attending to him, which would undoubtedly give rise to all sorts of thoughts in their hearts.
Coming back to her senses, Mu Zixuan said, "Prince, I understand what you mean. I shall start practicing martial arts from tomorrow on."