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+# Please use the updated v4neo trainer instead
+
+https://github.com/BlinkDL/RWKV-LM/tree/main/RWKV-v4neo
+
+The original `RWKV-v4` trainer is a reference implementation. For all v4 models, it is better (and faster) to use the `RWKV-v4neo` trainer instead. 
+And has both more features, and is generally much faster.
+
+The following code is for reference only, and is not supported.