Translate the following into Chinese. Most teachers have never given online teaching classes, so this is a novelty for them, too. They have to learn to speak naturally in front of a camera, use digital red pens during presentations, and keep the students engaged online via written comments — not an easy feat with young kids or teenagers. Teachers in China have been using Alibaba's DingTalk in order to hold live-streaming classes. This may sound easy for many people, but as teacher Jessie Xie from Chengdu told the South China Morning Post "It’s not easy for some older teachers to learn how to do live-streaming courses. Yesterday one of my colleagues told me she still didn’t know how to use it [even after the coaching session]." The Ministry of Education recently released a statement decrying schools for making it mandatory for students to clock in and out at specific times of the day. The ministry said schools shouldn’t place a hard minimum on how much a student should study each day, nor should it be mandatory for students to film themselves studying for hours on end. It also warned schools not to overwork teachers by requiring them to record every class and banned kindergartens from hosting online classes.