In two weeks. Huitong was transferred in less than two weeks. Background investigation, also known as "verification of certification materials", refers to the method of verifying the authenticity and validity of the candidate's background information and certification materials by consulting the applicant's former boss, people who have recently had the opportunity to observe him, educational institutions, referees, etc. It has the function of supplementing the lack of information in the selection process and helping to confirm or obtain candidate information. It is an effective method to directly confirm the factual information of candidates.