diff --git a/rust-pvz-genetics/src/genetics/gene/gene_place.rs b/rust-pvz-genetics/src/genetics/gene/gene_place.rs
index 6704cab..c1e1123 100644
--- a/rust-pvz-genetics/src/genetics/gene/gene_place.rs
+++ b/rust-pvz-genetics/src/genetics/gene/gene_place.rs
@@ -6,6 +6,8 @@ pub enum GenePlace {
     Stem,
     Head,
     Face,
+    Mouth,
+    Eyes,
     Leaf,
 }
 
@@ -17,6 +19,8 @@ impl Display for GenePlace {
             GenePlace::Head => "Head",
             GenePlace::Face => "Face",
             GenePlace::Leaf => "Leaf",
+            GenePlace::Eyes => "Eyes",
+            GenePlace::Mouth => "Mouth",
         })
     }
 }
@@ -29,6 +33,8 @@ impl GenePlace {
             GenePlace::Head => GenePlace::Head,
             GenePlace::Face => GenePlace::Face,
             GenePlace::Leaf => GenePlace::Leaf,
+            GenePlace::Mouth => GenePlace::Face,
+            GenePlace::Eyes => GenePlace::Face,
         }
     }
 }
diff --git a/rust-pvz-genetics/src/genetics/genome.rs b/rust-pvz-genetics/src/genetics/genome.rs
index f63b345..ad2c183 100644
--- a/rust-pvz-genetics/src/genetics/genome.rs
+++ b/rust-pvz-genetics/src/genetics/genome.rs
@@ -2,7 +2,7 @@ use std::fmt::Display;
 
 use crate::genetics::gene::Gene;
 
-#[derive(Clone,PartialEq,Eq)]
+#[derive(Default,Clone,PartialEq,Eq)]
 pub struct Genome {
     pub(crate) graph: Vec<(Gene,Vec<usize>)>,
 }
diff --git a/rust-pvz-genetics/src/genetics/plant_templates.rs b/rust-pvz-genetics/src/genetics/plant_templates.rs
index f39e0f7..a3ac5ba 100644
--- a/rust-pvz-genetics/src/genetics/plant_templates.rs
+++ b/rust-pvz-genetics/src/genetics/plant_templates.rs
@@ -6,12 +6,14 @@ pub fn peashooter_template() -> Genome {
         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(|_|{}))
+        Gene::new(GeneSource::Peashooter,GenePlace::Eyes,GeneType::Structural),
+        Gene::new(GeneSource::Peashooter,GenePlace::Mouth,GeneType::consumer(|_|{}))
     ],vec![
         (0,1),
         (1,2),
         (2,3),
-        (2,4)
+        (2,4),
+        (2,5),
     ]).unwrap()
 }
 
@@ -20,11 +22,13 @@ pub fn sunflower_template() -> Genome {
         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(|_|{})),
+        Gene::new(GeneSource::Sunflower,GenePlace::Eyes, GeneType::Structural),
+        Gene::new(GeneSource::Sunflower,GenePlace::Mouth, GeneType::consumer(|_|{})),
     ], vec![
         (0,1),
         (1,2),
         (2,3),
+        (2,4),
     ]).unwrap()
 }
 
diff --git a/rust-pvz-genetics/src/lib.rs b/rust-pvz-genetics/src/lib.rs
index 9f8d80d..ad44e82 100644
--- a/rust-pvz-genetics/src/lib.rs
+++ b/rust-pvz-genetics/src/lib.rs
@@ -1,2 +1,11 @@
+use godot::prelude::*;
+
 pub mod genetics;
 pub mod wrapper;
+
+struct PVZGenetics;
+
+#[gdextension]
+unsafe impl ExtensionLibrary for PVZGenetics {
+
+}
diff --git a/rust-pvz-genetics/src/wrapper/godot_genome.rs b/rust-pvz-genetics/src/wrapper/godot_genome.rs
new file mode 100644
index 0000000..7cb7604
--- /dev/null
+++ b/rust-pvz-genetics/src/wrapper/godot_genome.rs
@@ -0,0 +1,34 @@
+use godot::prelude::*;
+use godot::classes::{Node,INode};
+
+use crate::genetics::genome::Genome;
+
+#[derive(GodotConvert, Var, Export, Default, Clone)]
+#[godot(via = GString)]
+pub enum PlantType {
+    #[default] // Rust standard attribute, not godot-rust.
+    None,
+    Peashooter,
+    Sunflower,
+}
+
+#[derive(GodotClass)]
+#[class(base=Node)]
+struct GodotGenome {
+    #[export]
+    from_plant: PlantType,
+    genome: Genome,
+    base: Base<Node>
+}
+
+#[godot_api]
+impl INode for GodotGenome {
+    fn init(base: Base<Node>) -> Self {
+        Self {
+            from_plant: PlantType::None,
+            genome: Genome::new(),
+            base
+        }
+    }
+
+}
diff --git a/rust-pvz-genetics/src/wrapper/mod.rs b/rust-pvz-genetics/src/wrapper/mod.rs
index e69de29..1ea2455 100644
--- a/rust-pvz-genetics/src/wrapper/mod.rs
+++ b/rust-pvz-genetics/src/wrapper/mod.rs
@@ -0,0 +1 @@
+pub mod godot_genome;