The division of factional powers in high society is not as simple as black and white.
Azeroth, being such a vast place, does not merely belong to the Alliance in the East and the Tribe in the West.
Blood Elves are so beautiful, yet they mingle with the grotesque creatures of the Tribe, not willingly but due to many dark histories that cannot be openly discussed in detail.
Stormwind City is not the orthodox of the Human Race; the true lineage lies in Arathi and Undercity.
Both factions could be said to contain elements of each other, making the divisions not so clear-cut.
Shen Jianzhen's eldest son is in real estate, and his second son is in education.
The Wei Family is similar.
The inheritance left by the Wei Family is not something concrete that can be easily packed and taken away.
Who has the ability to arrange things in all aspects for you?
Even the primary beneficiary doesn't know.
This "not knowing" is quite thought-provoking.