update README

README.md

@@ -223,6 +223,10 @@ The details of download pretrained models are shown [here](checkpoints-download.
 
 ## 🔑 Usage
 
+HunyuanImage-2.1 only supports 2K image generation (e.g. 2048x2048 for 1:1 images, 2560x1536 for 16:9 images, etc.).
+Generating images with 1K resolution will result in artifacts.
+Additionally, we recommend using the full generation pipeline for better quality (i.e. enabling prompt enhancement and refinment).
+
 ```python
 import torch
 from hyimage.diffusion.pipelines.hunyuanimage_pipeline import HunyuanImagePipeline
@@ -235,6 +239,13 @@ pipe = pipe.to("cuda")
 prompt = "A cute, cartoon-style anthropomorphic penguin plush toy with fluffy fur, standing in a painting studio, wearing a red knitted scarf and a red beret with the word “Tencent” on it, holding a paintbrush with a focused expression as it paints an oil painting of the Mona Lisa, rendered in a photorealistic photographic style."
 image = pipe(
     prompt=prompt,
+    # Examples of supported resolutions and aspect ratios for HunyuanImage-2.1:
+    # 16:9  -> width=2560, height=1536
+    # 4:3   -> width=2304, height=1792
+    # 1:1   -> width=2048, height=2048
+    # 3:4   -> width=1792, height=2304
+    # 9:16  -> width=1536, height=2560
+    # Please use one of the above width/height pairs for best results.
     width=2048,
     height=2048,
     use_reprompt=True,  # Enable prompt enhancement

README_CN.md

@@ -196,6 +196,10 @@ pip install flash-attn==2.7.3 --no-build-isolation
 
 ## 🔑 使用
 
+HunyuanImage-2.1 仅支持 2K 分辨率图像生成（如 1:1 时为 2048x2048，16:9 时为 2560x1536 等）。
+使用其1K分辨率生成图像可能会带来画质下降与瑕疵。
+此外，我们建议使用完整的生成流程以获得更高画质（即启用提示词增强和精修功能）。
+
 ```python
 import torch
 from hyimage.diffusion.pipelines.hunyuanimage_pipeline import HunyuanImagePipeline
@@ -208,6 +212,13 @@ pipe = pipe.to("cuda")
 prompt = "A cute, cartoon-style anthropomorphic penguin plush toy with fluffy fur, standing in a painting studio, wearing a red knitted scarf and a red beret with the word “Tencent” on it, holding a paintbrush with a focused expression as it paints an oil painting of the Mona Lisa, rendered in a photorealistic photographic style."
 image = pipe(
     prompt=prompt,
+    # HunyuanImage-2.1 支持的分辨率与宽高比示例：
+    # 16:9  -> width=2560, height=1536
+    # 4:3   -> width=2304, height=1792
+    # 1:1   -> width=2048, height=2048
+    # 3:4   -> width=1792, height=2304
+    # 9:16  -> width=1536, height=2560
+    # 建议使用上述长宽组合以获得最佳效果。
     width=2048,
     height=2048,
     use_reprompt=True,  # 启用提示词增强