A First Officer in aviation is a commercial airline pilot who helps navigate and operate flights. They work in the cockpit with the Captain to assist them with the flight. They sit in the right seat and are the second in command (SIC), while the Captain sits in the left seat and is the pilot in command (PIC).
look at the comments, your guys are so mean. They are real lives. I understood your guys don't like mainland china, but pls respect other people's lives.