First, the issue of knight status is more cautious.
During the 300 years of the Qing dynasty, we have been very cautious about knighthood, unlike the Ming dynasty. At the beginning of the Qing Dynasty, five Han people with different surnames were knighted. However, when the rule of the Qing Dynasty stabilized, these five barons were abolished one after another. After that, no matter how much contribution Han people with different surnames make, they will not be named barons.
Second, the first-class land is the highest title held by Han people with different surnames.
No matter how good the relationship between Wei Xiaobao and Kangxi is, he is still a Han Chinese with different surnames. At that time, first-class Lu was already the highest title that a Han Chinese with different surnames could obtain. Moreover, in the past 300 years in the Qing Dynasty, only 34 first-class dukes were produced, of which only three were Han Chinese.
Third, Wei Xiaobao personally doesn't care.
Because this is a once-in-a-century event for the first-class duke, it can be seen that Wei Xiaobao won the favor of the emperor. On the other hand, a well-connected person like Wei Xiaobao has many ways to make money, so he doesn't care about salary at all, and he doesn't care whether he will get a higher position.