|“||"Making his way toward the pitch-black fortress, Xue Ying had crossed more than twenty-five thousand kilometers in the blink of an eye. The fortress was gradually grown in size in his vision when he suddenly revealed a frown. He saw a passage opening up at the top of that fortress, from which a stream of particles flew out from to head toward him at top speed."||„|
As you can see it's said that he "crossed more than twenty-five thousand kilometers in the blink of an eye"
We'll use a baseline of 25,000 km.
How long is a blink of an eye:
The blink of an eye takes 250 milliseconds.
Distance: 25,000 km
One second would be:
25,000km/1/4s = 100,000 km /1s = 291545.19 mach or 0.333564095765c = 33% SoL (Relativistic)