The micro-teaching assistant upgrade was completed on February 6, 2020 and can be broadcast live. According to the relevant information, in the special period of national war and epidemic, in order to reduce the flow of personnel and prevent the spread of the epidemic, the Ministry of Education officially announced that colleges and universities should postpone the start of the spring semester in 2020. In response to the call of the country to suspend classes and continue studying, the technical team of micro-teaching assistants overcame many difficulties and upgraded to online micro-teaching assistants.