Filial Piety and Loyalty
One of the biggest advantages of being with Princess Mingwei was that there is never a dull moment. Regardless of how well the two people know each other, Mingwei could always find a topic to discuss and had a pleasant and engaging conversation. Xie Ning thought that this ability was mostly innate; Mingwei was just exceptionally gifted. As for herself, even if she strived to catch up from now on, she may not be able to reach Mingwei's level in her lifetime.
This required the ability to read people's expressions, understood their intentions, and had a thorough grasp of human relationships. Moreover, one needed endless patience and abundant energy. Without any of these qualities, it would be impossible to achieve.