diff --git a/rust-pvz-genetics/src/genetics/gene.rs b/rust-pvz-genetics/src/genetics/gene.rs
index 9204e37..dac4bf9 100644
--- a/rust-pvz-genetics/src/genetics/gene.rs
+++ b/rust-pvz-genetics/src/genetics/gene.rs
@@ -5,7 +5,7 @@ use crate::genetics::flow::Flow;
 #[derive(PartialEq,Eq,Clone)]
 pub struct Gene {
     pub plant_source: GeneSource,
-    pub place: String,
+    pub place: GenePlace,
     pub kind: GeneType
 }
 
@@ -21,6 +21,15 @@ pub enum GeneSource {
     PotatoMine,
 }
 
+#[derive(PartialEq,Eq,Clone,Copy)]
+pub enum GenePlace {
+    Root,
+    Stem,
+    Head,
+    Face,
+    Leaf,
+}
+
 /// GeneType is an enum that defines behaviour of gene.
 #[derive(PartialEq,Eq,Clone)]
 pub enum GeneType {
@@ -75,10 +84,10 @@ pub enum ProduceDecision {
 }
 
 impl Gene {
-    pub fn new(plant_source: GeneSource, place_str: impl Into<String>, kind: GeneType) -> Self {
+    pub fn new(plant_source: GeneSource, place: GenePlace, kind: GeneType) -> Self {
         Self {
             plant_source,
-            place: place_str.into(),
+            place,
             kind,
         }
     }
@@ -96,6 +105,19 @@ impl Display for GeneSource {
     }
 }
 
+impl Display for GenePlace {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f,"{}",match self {
+            GenePlace::Root => "Root",
+            GenePlace::Stem => "Stem",
+            GenePlace::Head => "Head",
+            GenePlace::Face => "Face",
+            GenePlace::Leaf => "Leaf",
+        });
+        Ok(())
+    }
+}
+
 impl Display for Gene {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f,"({}) {}",self.plant_source,self.place);
@@ -142,3 +164,14 @@ impl GeneType {
     }
 }
 
+impl GenePlace {
+    pub fn broad(&self) -> GenePlace {
+        match self {
+            GenePlace::Root => GenePlace::Root,
+            GenePlace::Stem => GenePlace::Stem,
+            GenePlace::Head => GenePlace::Head,
+            GenePlace::Face => GenePlace::Face,
+            GenePlace::Leaf => GenePlace::Leaf,
+        }
+    }
+}
diff --git a/rust-pvz-genetics/src/genetics/manipulations.rs b/rust-pvz-genetics/src/genetics/manipulations.rs
index 8289c4c..b341635 100644
--- a/rust-pvz-genetics/src/genetics/manipulations.rs
+++ b/rust-pvz-genetics/src/genetics/manipulations.rs
@@ -48,10 +48,10 @@ impl PairGenomeModificator {
         let mut categories_b: HashMap<String, Vec<usize>> = HashMap::new();
 
         for (i, (gene, _)) in self.genome_a.graph.iter().enumerate() {
-            categories_a.entry(gene.place.clone()).or_default().push(i);
+            categories_a.entry(gene.place.to_string()).or_default().push(i);
         }
         for (i, (gene, _)) in self.genome_b.graph.iter().enumerate() {
-            categories_b.entry(gene.place.clone()).or_default().push(i);
+            categories_b.entry(gene.place.to_string()).or_default().push(i);
         }
 
         for (category, indices_a) in &categories_a {
diff --git a/rust-pvz-genetics/src/genetics/plant_templates.rs b/rust-pvz-genetics/src/genetics/plant_templates.rs
index e6cf435..f39e0f7 100644
--- a/rust-pvz-genetics/src/genetics/plant_templates.rs
+++ b/rust-pvz-genetics/src/genetics/plant_templates.rs
@@ -1,12 +1,12 @@
-use crate::genetics::{flow::Flow, gene::{GeneSource, GeneType,Gene}, genome::Genome};
+use crate::genetics::{flow::Flow, gene::{GenePlace,GeneSource, GeneType,Gene}, genome::Genome};
 
 pub fn peashooter_template() -> Genome {
     Genome::from_edges(vec![
-        Gene::new(GeneSource::Peashooter,"root", GeneType::pure_producer(|_|{Flow::empty()})),
-        Gene::new(GeneSource::Peashooter,"stem", GeneType::fill_all()),
-        Gene::new(GeneSource::Peashooter,"head",GeneType::random_distribution()),
-        Gene::new(GeneSource::Peashooter,"leaf",GeneType::modifier(|_|{Flow::empty()})),
-        Gene::new(GeneSource::Peashooter,"face",GeneType::consumer(|_|{}))
+        Gene::new(GeneSource::Peashooter,GenePlace::Root, GeneType::pure_producer(|_|{Flow::empty()})),
+        Gene::new(GeneSource::Peashooter,GenePlace::Stem, GeneType::fill_all()),
+        Gene::new(GeneSource::Peashooter,GenePlace::Head,GeneType::random_distribution()),
+        Gene::new(GeneSource::Peashooter,GenePlace::Leaf,GeneType::modifier(|_|{Flow::empty()})),
+        Gene::new(GeneSource::Peashooter,GenePlace::Face,GeneType::consumer(|_|{}))
     ],vec![
         (0,1),
         (1,2),
@@ -17,10 +17,10 @@ pub fn peashooter_template() -> Genome {
 
 pub fn sunflower_template() -> Genome {
     Genome::from_edges(vec![
-        Gene::new(GeneSource::Sunflower,"root", GeneType::Structural),
-        Gene::new(GeneSource::Sunflower,"stem", GeneType::Structural),
-        Gene::new(GeneSource::Sunflower,"head", GeneType::modifier(|_|{Flow::empty()})),
-        Gene::new(GeneSource::Sunflower,"face", GeneType::consumer(|_|{})),
+        Gene::new(GeneSource::Sunflower,GenePlace::Root, GeneType::Structural),
+        Gene::new(GeneSource::Sunflower,GenePlace::Stem, GeneType::Structural),
+        Gene::new(GeneSource::Sunflower,GenePlace::Head, GeneType::modifier(|_|{Flow::empty()})),
+        Gene::new(GeneSource::Sunflower,GenePlace::Face, GeneType::consumer(|_|{})),
     ], vec![
         (0,1),
         (1,2),
@@ -30,11 +30,11 @@ pub fn sunflower_template() -> Genome {
 
 pub fn cherry_bomb_template() -> Genome {
     Genome::from_edges(vec![
-        Gene::new(GeneSource::CherryBomb,"root", GeneType::modifier(|_|{Flow::empty()})),
-        Gene::new(GeneSource::CherryBomb,"head", GeneType::consumer(|_|{})),
-        Gene::new(GeneSource::CherryBomb,"head", GeneType::consumer(|_|{})),
-        Gene::new(GeneSource::CherryBomb,"face", GeneType::Structural),
-        Gene::new(GeneSource::CherryBomb,"face", GeneType::Structural),
+        Gene::new(GeneSource::CherryBomb,GenePlace::Root, GeneType::modifier(|_|{Flow::empty()})),
+        Gene::new(GeneSource::CherryBomb,GenePlace::Head, GeneType::consumer(|_|{})),
+        Gene::new(GeneSource::CherryBomb,GenePlace::Head, GeneType::consumer(|_|{})),
+        Gene::new(GeneSource::CherryBomb,GenePlace::Face, GeneType::Structural),
+        Gene::new(GeneSource::CherryBomb,GenePlace::Face, GeneType::Structural),
     ], vec![
         (0,1),
         (0,2),