Aiyun school corrects papers. Can you tell which teacher changed it?

You can't. Official website of Aiyun School introduced that the answer sheet will be cut into many small pieces after being scanned into the computer, and different marking teachers will change different small pieces and randomly assign them to the marking teachers, so it is impossible to see which teacher corrects the test paper. Aiyun School is an Internet education company that uses cloud computing and big data technology to help primary and secondary schools improve their management and teaching level.