Han Jing looked at Xia Wu: "Taking A zhu away is not a problem. It seems that, generally, those people won't easily clash with the island's guests, so it's unlikely they'd make an enemy out of us over A zhu. But this girl's personality is quite stubborn; it's unlikely she would leave her family behind and leave on her own. What to do? I admire her determination, yet I'm also troubled by her decision. Considering it from her perspective, helping her is really not easy."
This kind of thing is actually not a big deal; it's just oppression between different classes. As pearl farmers, Grandpa Zhu and his granddaughter have no power to resist their current fate, so Han Jing and the others can save them for a while, but not for a lifetime. It's a temporary fix, not a permanent solution.
The only way to help A zhu escape the predicament is to take her away from Yunzhu Island.
