See
The Ef'i lacked the Thilku's heavy and limiting pride. They only cared about their battle prowess and how to improve it. It didn't matter if the opportunity didn't come from their planet or species. As long as a path toward power existed, they would walk it.
Khan wasn't only offering the Ef'i the incredible supplement. He was also promising better training grounds. Topping Onia's harsh environments wouldn't be easy, but Khan's power gave weight to his words, forcing Tlexicpalli to believe him.
Tlexicpalli fell silent. Truth be told, the Ef'i could settle the matter in a few weeks. Their scientists could study the supplement inside the Embassy on Baoway, and Khan's teleports could send that resource to Onia afterward.