From Zhang Jing's demeanor, it's evident that the Eight Immortals Hall indeed wants Hong Jiaxin, but they've been relatively polite to her.
As for why they are so determined to get Hong Jiaxin, it remains a mystery.
Luo Yang suspects that the Hong Zhong Couple are in the hands of the Eight Immortals Hall. If he wants to know Mu Tan's whereabouts, he could just directly ask Hong Zhong.
Perhaps Hong Zhong is stubbornly refusing to speak, which is why the Eight Immortals Hall might want to use Hong Jiaxin to threaten him.
But there's one thing Luo Yang still hasn't figured out—when he had spoken to Hong Zhong on the phone before, it was clear that Hong Zhong wasn't exactly captured; at most, he was under soft imprisonment.
From the various signs, Luo Yang deduced that Hong Zhong is acquainted with the members of the Eight Immortals Hall.
The reason Hong Zhong doesn't want his daughter to fall into the hands of the Eight Immortals Hall remains another puzzle.
