According to the official website query of 5 1 Visiting Network, 5 1 Visiting Network is a platform providing application service for visiting schools, which belongs to Beijing Ruisihe Technology Co., Ltd., and its team members have graduated from well-known universities at home and abroad and have rich experience in visiting schools. The platform has established cooperative relations with many well-known overseas universities, which can provide first-hand information on visiting scholars' projects and positions.