Lin Xian heard this and was about to retort, saying that Turing clearly intended to kill him by vile means, like crashing a spacecraft into him.
But then...
He paused, thought it through, and understood.
Whether it was Turing or Kevin Walker trying to kill him, he wasn't yet a member of the Genius Club at the time, so it didn't technically violate the rules.
In this way, it also explained why Kevin Walker hated Jask to the core but couldn't directly harm him—because of Einstein's [prohibition].
Come to think of it, that made sense.
If Kevin Walker really wanted to kill Jask, he might as well have directly controlled a spacecraft to crash into Jask on the Scenic Iron Tower. Why bomb Jask's satellites and factories with such fanfare without causing him any substantial harm?
Then back to Lin Xian himself.
At the time, he wasn't a Genius Club member, so Einstein's prohibitions didn't protect him, which allowed Kevin Walker to make an attempt on his life.