Historical records record that Duke Zhuang of Wei did not like Queen Zhuang Jiang, and because he did not like her, he had no children. Perhaps this was not the case?
Zhuang Jiang is a princess of Qi State, beautiful and intelligent.
Could it be that Duke Zhuang and Zhuang Jiang had no intention of being tied to each other just because of Qi and Wei? There was another reason for their childlessness. Could it be that Zhuang Jiang also had someone he liked?
Everything is just speculation on my part...
Intention: A beautiful smile, beautiful eyes looking forward to it