The company I applied for this time said that my resume has been sent to the leader in charge of personnel. What does that mean?
It shouldn't be so soon. If I'm not mistaken, you should get a call to inform you that a company has read your resume and that their branch is hiring. Submit your resume to the person in charge of the branch, depending on what the person in charge of the branch thinks of your resume. Next, if you get another call informing you of your interview, you should be prepared. You can't be admitted until you are informed later.