Chen Jin voiced his purpose in a veiled manner.
Interests.
Huge interests.
A proportion of at least 30%... This was a scale of such proportions that one could never abandon it.
Of course, in actual fact, most of the assets included in the 30% were Chen Jin's personal interests; but he needed people to help protect them.
Especially the portal to the alternate dimension.
Which included the whole universe that the planet of Haierfa resided in.
It was impossible for Chen Jin to give it up; he could not bear to do so.
Therefore, he would not leave Earth... even if all other human beings left and all the remaining occupants were the Protoss, he would still stay here.
The other universe that existed on the other side of the portal was something that he must protect.
It was likely to become his future home.
Surrendering the portal to the Protoss on a silver platter—that was out of the question.