To date, over 5,700 exoplanets have been discovered, with thousands more candidates awaiting confirmation. Thanks to advancements in observational technology, the map of known exoplanets has expanded dramatically, reaching from the solar neighborhood (100-200 parsecs) to distances of up to several thousand parsecs within our Galaxy. This marks the dawn of a new era in the census of exoplanets in the Milky Way. A fundamental question in Galactic exoplanet research is: How do the properties of planetary systems vary across different positions and ages within the Galaxy? Answering this question will offer valuable insights into the formation and evolution of the diverse exoplanet populations found in various Galactic environments. In this presentation, I will discuss our recent work, which focuses on the age-dependence of different planet types (such as hot/warm/cold Jupiters, super-Earths/sub-Neptunes, and ultra-short period planets), leveraging data from surveys like LAMOST, Gaia, and Kepler to uncover evidence of their long-term evolution.
