Group 1 - The 66th International Mathematical Olympiad (IMO) concluded in Queensland, Australia, with the Chinese team winning the team championship by a significant margin, scoring 231 points, and all six members received gold medals [1][2] - The Chinese team was the only team to achieve full gold medals, with a 15-point lead over the second-place USA team, and the gold medal threshold was set at 35 points [2] - Among the participants, Deng Leyan achieved a perfect score of 42 points, ranking first in the world, alongside teammate Zhang Hengyu [2][4] Group 2 - Deng Leyan, a first-year high school student, began professional tutoring with Yuanfudao in early 2021 and has since won multiple national mathematics competition awards [4][5] - Yuanfudao has developed a comprehensive competition course system across mathematics, physics, and biology, including specialized services for competition preparation [5] - In 2024, 601 students under Yuanfudao's guidance won medals in national competitions, with 82 students qualifying for national training teams, and 13 students gaining admission to Tsinghua University through a special program [6]