Group 1 - DingTalk announced a new "AI Homework Correction" feature in collaboration with Quark, allowing teachers and students to correct homework and categorize mistakes automatically through photo uploads [1][3] - The product is based on Quark's technology capabilities, marking its systematic entry into classroom teaching scenarios [1] - Quark launched an upgraded learning product called "Quark Teacher" in June, which provides targeted one-on-one tutoring based on students' learning stages and historical mistakes [3] Group 2 - The "AI Homework Correction" feature utilizes a professional question bank with billions of questions, enhancing the accuracy and efficiency of homework correction [3] - Teachers' daily homework correction time is significantly reduced from at least 2 hours to just 10 minutes [3] - The AI system automatically categorizes and summarizes common mistakes, helping teachers avoid errors in tracking and analyzing student performance [3]