diff --git a/internal/generator/settings.go b/internal/generator/settings.go
index 3b32878..b634061 100644
--- a/internal/generator/settings.go
+++ b/internal/generator/settings.go
@@ -46,7 +46,7 @@ type PlanetSetting struct {
 	MinDistanceHW uint32
 	MinSize       float64
 	MaxSize       float64
-	MinResource   float64
+	MinResource   float64 // Rules: [0.1, 20]
 	MaxResource   float64
 	Ratio         float64 // The proportion of the total number of free planets in the galaxy
 }
@@ -71,7 +71,7 @@ func DefaultMapSetting() MapSetting {
 			MinDistanceHW: 20,
 			MinSize:       1500,
 			MaxSize:       2500,
-			MinResource:   0,
+			MinResource:   0.1,
 			MaxResource:   3,
 			Ratio:         0.06,
 		},
@@ -88,7 +88,7 @@ func DefaultMapSetting() MapSetting {
 			MinDistanceHW: 0,
 			MinSize:       0,
 			MaxSize:       1000,
-			MinResource:   0,
+			MinResource:   0.1,
 			MaxResource:   10,
 			Ratio:         0.5,
 		},