Lex had acquired his knowledge about how to measure the time of the Nexus event, as well as how to locate the Nexus from the Kun Peng within the forest within Abaddon. He had been told that no one would have knowledge about the Nexus anymore, and as it turned out, he was not exaggerating.
Lex had assumed that while this information would be somewhat of a big deal, it shouldn't be anything too crazy since even Jack can gather the necessary information with his low cultivation level. He was sorely mistaken. The Nexus event was something mired in secrets, and touched upon conspiracies that went all the way back to the early days of the universe.
