Lord Stephen's words undoubtedly moved Su Ziyu.
Firstly, the Wasteland Plane is the first plane where he has seriously established some forces. Secondly, the background of the Wasteland Plane is quite remarkable, with a backdrop of Cold War-era technological explosions. The tech tree has advanced to cold nuclear fusion, yet it hasn't entered the interstellar age. Now there's an energy level explosion, directly elevating it to Energy Level 3.
Su Ziyu has experienced numerous planes over time, but there are very few he can truly develop as a base of operations.
There's no need to mention the Lizardman Plane, nor the plane with Lina; their foundations are really too weak.
