The second contact generally does not need to send a resume. After marking the paper, you should contact your tutor once and briefly introduce your feelings. If the teacher replies, don't send emails to other teachers. It's polite. Don't "raise fish" If the teacher doesn't reply to you for more than five days, change teachers as soon as possible and keep in touch until you reply. As long as the teacher replies to you, you need to reply as a courtesy.