It took another tea-brewing process for Zein to tell the old man about himself; about Lucretia, his ancestor, the one who carried the seed of Setnath--and the brief history of House Ishtera. He also told the old man about the first time he 'spoke' with the core fragment and found out that he was a fragment.
Zein answered Tian Yu's inquiries about many things, including more details about House Ishtera. But when he told the old man about what becoming the fragment of Setnath initially meant, the old man fell silent, looking at him with shaken eyes. Even after Zein finished explaining the 'agreement' he had with Setnath, the old man did not say anything for a long time.
"...huh," was the only thing coming out of the bewildered old man.