Difficult. Bailing data has strict requirements for the interviewer during the interview, so you can use advanced java. With advanced certificate of computer and advanced certificate of network security management, bachelor degree or above, must be fresh graduates. Bailing Data Co., Ltd. was established on August 5, 2008. The legal representative is Yang Zhao, and its business scope includes: software development; Computer technology development and technical services; Information electronic technology services; Research and development of network technology.