On September 16, China's taikonauts left for home after 90 days in the "Tianhe" core module of China's Space Station. American company SpaceX successfully launched its commercial manned spacecraft on the same day, carrying the first all-civilian crew into space. With the rapid development of space technology, the vast starry sky is gradually extending its hands to the general public. Does it mean space travel for everyone is around the corner? Or, for some countries, is another battlefield emerging?