Requires rebinding. According to Chawenyiwen.com, Yulin Education Cloud will need to rebind its mobile phone number every month if it is not logged in to prevent the risk of account theft and personal information leakage. Yulin Education Cloud is a website that uses artificial intelligence to promote the construction of teachers in Yulin City, Shaanxi Province, with the purpose of cultivating smart teachers who are "happy to learn and use".