“Where you offered to bring partners along? To have a look around Hong Kong together? See if it's a right fit?”
Lambs are like the poster child for innocence and gentleness. They are totally harmless to other creatures.
“Lambs to the slaughter” is a metaphor to anyone taking advantage or exploiting someone who does not understand what is about to happen to them.
They are also in the food chain of many carnivores, to include humans. And when we take this gentle innocent creature to be butchered for food, it doesn’t fight for it’s life, because it doesn’t grasp what is about to happen to it.