I know that I found it on novel updates. The main character has a system that transmigrated him into a new world. He is mistaken as an artificial female (a robot) and is taken in by a general(ml) Of the interstellar world and kept by his side for some time before the ml finds out that he is not an artificial female. The mc was mute at first btw. He learns how to sing and sings to let females tranform into human form using uis system powers. Chinese bl novel.