diff --git a/ops-test/Cargo.toml b/ops-test/Cargo.toml
new file mode 100644
index 0000000..794eb22
--- /dev/null
+++ b/ops-test/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "ops-test"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/ops-test/src/main.rs b/ops-test/src/main.rs
new file mode 100644
index 0000000..3edf04a
--- /dev/null
+++ b/ops-test/src/main.rs
@@ -0,0 +1,25 @@
+#[derive(Debug, Clone)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+impl std::ops::Add<Point> for Point {
+    type Output = Self;
+
+    fn add(self, rhs: Self) -> Self {
+        Point {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+
+fn main() {
+    let a = Point { x: 1, y: 2, };
+    let b = Point { x: 2, y: 4, };
+    let c = a.clone() + b;
+    println!("{:?}", a);
+    // println!("{:?}", b);
+    println!("{:?}", c);
+}