Sure, here is the translation based on your instructions:
Although Wudi the Third and Aida Kang, these two brothers, like Ji Xinghe, have become grandfathers, Wudi the Third's eldest grandson even already has a child. But considering the average lifespan of apes granted to the empire, especially the royal apes, Wudi the Third and Aida Kang are indeed in their prime at this time.
Correspondingly, according to the average lifespan of humans, Ji Xinghe and Ji Rongxinyue, although both possess the power of qi, conform to the notion of one being old and the other weak due to the brevity of time. Moreover, it's not just old and weak; the condition of the two can be said to be one crippled and one wounded.
