First the letter was sent from Wenchang Satellite Launch Center (WSLC), located in Wenchang on Hainan Island off China’s southern coastline on May 29, 2021, at the day when the Chang Zheng-7 (Long March-7) rocket-carrier was launched from Wenchang Satellite Launch Center (WSLC). The rocket orbited the “Tianzhou-2” unmanned supply spacecraft. The letter arrived Moscow, Russia and was sent to the ISS crew. The letter was delivered to the ISS by the Russian “Progress MS-18” unmanned supply spacecraft. The space vehicle docked to the International Space Station on October 30, 2021. The letter was post marked with the board seals dated the day of docking.