The successful transit missions hae revealed the abundant existence of close-in planets (<~1 AU), but what about the region beyong that? In the nebula phase, the outer region dominates both the mass and the angular momentum budget. Therefore, the cold planets, if exist, may have played a critical role in shaping the distribution and architecture of the close-in planets (and the planetary system as a whole).
In this poster, I will first describe what we have learned about the (mass and multiplicity) distribution of cold planets from RV and microlensing, and then summarize the known connection between the inner (<~1 AU) and the outer (~1-10 AU) planet populations. Theoretical implications of the presented results will also be discussed.