Core Points - The Tianzhou cargo spacecraft is a crucial component of China's space station project, responsible for transporting goods, refueling, and returning waste to the atmosphere, while also supporting attitude control and scientific experiments [1] Group 1: Development of Tianzhou Series - Tianzhou-1, launched on April 20, 2017, was China's first cargo spacecraft, successfully verifying key technologies for cargo transport and in-orbit refueling, laying a solid foundation for the space station's development [3] - Tianzhou-2, launched on May 29, 2021, has a cargo capacity of 6.9 tons, sufficient for three astronauts' three-month stay, and completed four docking maneuvers with the Tianhe core module [5] - Tianzhou-3, launched on September 20, 2021, reduced docking time from 8 hours to 6.5 hours and doubled the life supplies for three astronauts for a six-month stay [7] - Tianzhou-4, launched on May 10, 2022, introduced color-coded packaging for better organization of supplies for astronauts [9] - Tianzhou-5, launched on November 12, 2022, achieved a world record with a 2-hour autonomous docking, enhancing emergency supply capabilities [11] - Tianzhou-6, launched on May 10, 2023, improved cargo capacity from 6.9 tons to 7.4 tons and reduced launch frequency from 4 to 3 per 2 years [13] - Tianzhou-7, launched on January 17, 2024, utilized a 3-hour rapid docking mode, delivering approximately 5.6 tons of supplies for two astronaut crews [15] - Tianzhou-8, scheduled for November 2024, will enhance the ability to transport time-sensitive materials, supporting scientific experiments in orbit [17]