The sudden outbreak of the novel coronavirus disease (COVID-19) in China resulted in the sudden closure of schools, interrupting teaching plans. To prevent the virus from spreading across campuses and ensure the safety of teachers and students, China's Ministry of Education (MOE) closed all educational facilities. However, the MOE mandated that schools of all types and at all levels "retain the education program despite the suspension of classes" by adapting solutions to local conditions. Consequently, nearly 170 million Chinese primary and secondary school students have been engaged in a super large-scale online learning program from mid-February. This study explores teachers' responses to and experiences of the online learning initiatives.