According to the news on the website of the Russian National Space Corporation on the 28th, at 5:48 a.m. Moscow time (10:48 a.m. Beijing time), the Russian "Progress MS-21" cargo spaceship docked with the International Space Station. The "Progress MS-21" cargo spaceship lifted off from the Baikonur launch site in Kazakhstan on the 26th to deliver about 2.5 tons of cargo to the International Space Station, including various equipment, fuel, water and food. The Russian "Progress MS" series cargo spaceships provide services for orbital stations, including transporting various materials. The "Progress" cargo spaceship is not recyclable. Generally, after completing the replenishment task, astronauts will fill the spaceship with all kinds of domestic garbage and waste generated from the space station, and the spaceship will then go off orbit and destroy itself. (Liu Xinshe)