Group 1 - The Chinese team achieved significant results at the 2025 World Athletics Relay Championships, securing qualifications for the World Championships in four events and breaking two national records [2][3]. - The men's 4×400 meters relay team, composed of young athletes, set a new national record of 3 minutes 01.87 seconds, marking the first time China qualified for the World Championships in this event [3][4]. - The women's 4×100 meters relay team faced challenges but managed to regroup and qualify with a season-best time of 43.03 seconds, showcasing resilience and potential for future competitions [5][6]. Group 2 - The relay events served as a platform for young athletes to gain experience and confidence, with an emphasis on developing a new generation of sprinters for international competition [4][6]. - The average age of the competing teams was notably low, with the men's 4×100 meters team averaging under 20 years old, indicating a promising future for Chinese relay events [4][5]. - The upcoming Tokyo World Championships in September 2025 represents both a challenge and an opportunity for the young Chinese relay team, as they aim to compete against top-tier international teams [6].