King of Qin's words made Liu Yu pause for a moment.
Honestly speaking... he did feel a sense of unease rise with Ziyue.
Back then, he and Ali both mistakenly wandered into the back mountain and were rescued by the suddenly appearing Ziyue. Thereafter, Ziyue took them both to traverse the world and explore numerous secrets. Most of his skills, aside from inheritance, were taught by Ziyue.
Logically speaking, owing a great favor to Ziyue and coupled with the camaraderie of the three at that time, their relationship should have been very close.
But it was not so, from the moment Ziyue entered the palace, he kept a respectful distance. Of the trio, he was the first one to quietly leave!
Ali later became indifferent towards him, probably blaming him for his unannounced departure, but... he had no choice, he was truly afraid.