diff --git a/examples/cyhair_to_gltf/README.md b/examples/cyhair_to_gltf/README.md
index 4336460..947e3ae 100644
--- a/examples/cyhair_to_gltf/README.md
+++ b/examples/cyhair_to_gltf/README.md
@@ -2,6 +2,8 @@
 
 ![](../../images/cyhair.png)
 
+Convert CyHair to curve points using glTF + extension(curve data format is described in `../alembic_to_gltf/README.md`).
+
 For CyHair format, please refer: http://www.cemyuksel.com/cyCodeBase/code.html .
 
 For hair model with CyHair format, please refer for example: http://www.cemyuksel.com/research/hairmodels/