Nothing on Liberty Island could be truly hidden; it was simply too close to New York. With a powerful enough optical telescope, one could easily observe Liberty Island from buildings along the coast.
After the transformation of the monkey, Ren Suo for the sake of facilitating communication, gave it a "Blue Stripes Red Card" evolution, "Echo of Thought". Although this evolution did not add any special effects to the monkey's voice, it allowed the monkey to understand the speech of others regardless of language barriers—in gaming terms, when someone spoke, a chat bubble would pop up above their head, and within it would be the translated Chinese...
Since the monkey had vocal organs similar to humans', as long as the text Ren Suo entered was pronounceable by humans, the monkey could also produce the corresponding sounds. And just as the monkey could understand others' speech, its own language could be effortlessly understood by others as well.