diff --git a/How-to-train-a-model?.md b/How-to-train-a-model?.md
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 3. Write a script to use Trainer. 
 [example](https://github.com/fastnlp/fastNLP/blob/743a6d75474fa393bc849c0392317c2c6bd868e4/reproduction/chinese_word_seg/cws_train.py#L51)
+
+#### Chinese Word Segmentation (CWS)
+CWS data can be downloaded from [here](http://sighan.cs.uchicago.edu/bakeoff2005/).