Apart from startups like Squirrel AI which focus on personalisation in learning, there are other startups like Alo7 and Hanwang that deploy face and voice analysis to its video tutoring sessions, which then produce summary reports of each lesson. The ML algorithms analyse each student's behavioural data and give them a weekly score, which is accessible through a mobile app for the teachers or parents. Some people could say using facial and voice data to evaluate learning sessions is controversial in terms of user privacy. But, for a large country like China which may have a shortage of quality teachers, such AI tools can help in the learning process. Deploying AI as a replacement and a supplement to teachers is one of the solutions how China is training millions of students.