Update README.md

README.md

@@ -4,4 +4,48 @@ language:
 - zh
 - en
 pipeline_tag: text-generation
----
+library_name: transformers
+---
+
+# PCMind-2.1-Kaiyuan-2B (脑海-2.1-开元-2B)
+
+[![License](https://img.shields.io/badge/Code_License-MIT-f5de53?&color=f5de53)](LICENSE)
+
+PCMind-2.1-Kaiyuan-2B is a fully-open model.
+
+## Usage
+
+The model architecture is similar to [Qwen/Qwen3-1.7B](https://huggingface.co/Qwen/Qwen3-1.7B),
+and can be easily loaded by libraries like `transformers`.
+
+Please use [`demo.py`](demo.py) as an example of use.
+
+_Note: This is a pretrained base model only and has not undergone fine-tuning,
+reinforcement learning (RL), or any other post-training procedures.
+It is not designed for direct use as a conversational model or dialogue system.
+To adapt it for specific applications, including chat or instruction-following tasks,
+further training and alignment are required._
+
+## Citation
+
+Our technical report is coming soon!
+
+## License
+
+The code and model weights of Kaiyuan-2B are licensed under [Apache-2.0 License](LICENSE) with the following copyright notice.
+
+```text
+Copyright 2025 Tsinghua University & Peng Cheng Laboratory
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```