diff --git a/egs/aishell4/ASR/pruned_transducer_stateless5/asr_datamodule.py b/egs/aishell4/ASR/pruned_transducer_stateless5/asr_datamodule.py
index d980a857f..31051f612 100644
--- a/egs/aishell4/ASR/pruned_transducer_stateless5/asr_datamodule.py
+++ b/egs/aishell4/ASR/pruned_transducer_stateless5/asr_datamodule.py
@@ -306,7 +306,7 @@ class Aishell4AsrDataModule:
                 max_duration=self.args.max_duration,
                 shuffle=self.args.shuffle,
                 num_buckets=self.args.num_buckets,
-                buffer_size=30000,
+                buffer_size=100000,
                 drop_last=self.args.drop_last,
             )
         else:
diff --git a/egs/aishell4/ASR/pruned_transducer_stateless5/local b/egs/aishell4/ASR/pruned_transducer_stateless5/local
new file mode 120000
index 000000000..c820590c5
--- /dev/null
+++ b/egs/aishell4/ASR/pruned_transducer_stateless5/local
@@ -0,0 +1 @@
+../local
\ No newline at end of file
diff --git a/egs/aishell4/ASR/zipformer/local b/egs/aishell4/ASR/zipformer/local
new file mode 120000
index 000000000..c820590c5
--- /dev/null
+++ b/egs/aishell4/ASR/zipformer/local
@@ -0,0 +1 @@
+../local
\ No newline at end of file