The search for extraterrestrial life and exploration of "another Earth" is an eternal theme for humans and inspires generations of planetary scientists. It not only improves our understanding of the formation and evolution of planets during the formation of a star system but also helps scientists to investigate the possible conditions and criteria of the existence of life. In the past 30 years, scientists have discovered more than 4,000 exoplanets, but exploration still has a long way to go.