Su Xin contemplated for a long time.
He couldn't resist asking the system in his mind if it was possible to spend more causality points to select an additional trait, or to forget a previous trait and replace it with the two current ones.
But the system remained unresponsive.
In the end, he could only suppress his frustration and make a difficult decision.
"I choose... Space-Time Mark!"
The upgrade of the superpower was completed instantly.
The Space-Time Mark trait was also successfully solidified.
After receiving the relevant information about this trait in his mind, Su Xin began to experiment.
He clasped his hands together.
At the same time, with a thought, a Space-Time Mark quietly appeared in his mind, but he didn't instantly teleport out of the office.
Su Xin knew there were definitely surveillance cameras in this office, so he had no intention to continue storing Space-Time Marks, and instead separated his hands.
With another thought.
