diff --git a/applications/ColossalChat/coati/dataset/loader.py b/applications/ColossalChat/coati/dataset/loader.py
index 35b3deced..1a6b04d43 100755
--- a/applications/ColossalChat/coati/dataset/loader.py
+++ b/applications/ColossalChat/coati/dataset/loader.py
@@ -357,7 +357,9 @@ def apply_chat_template_and_mask(
     ignore_idx: int = -100,
 ) -> Dict[str, torch.Tensor]:
 
-    system_prompt = "You are a helpful assistant. The assistant first thinks about the reasoning process in the mind and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and<answer> </answer> tags, respectively, i.e., <think> reasoning process here </think><answer> answer here </answer>. Now the user asks you to solve a math problem that involves reasoning.\n"
+    system_prompt = "You are a helpful assistant. The assistant first thinks about the reasoning process in the mind and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and<answer> </answer> tags, respectively, i.e., <think> reasoning process here </think><answer> answer here </answer>. Now the user asks you to solve a math problem that involves reasoning. After thinking, when you finally reach a conclusion, clearly output the final answer without explanation within the <answer> </answer> tags, i.e., <answer> 123 </answer>.\n\n"
+
+    
 
     system_element = {
         "role": "system",
diff --git a/applications/ColossalChat/coati/distributed/consumer.py b/applications/ColossalChat/coati/distributed/consumer.py
index 84a69979f..a99198d7e 100644
--- a/applications/ColossalChat/coati/distributed/consumer.py
+++ b/applications/ColossalChat/coati/distributed/consumer.py
@@ -1,6 +1,6 @@
 from contextlib import nullcontext
 from typing import Any, Dict, Optional
-
+import os
 import ray
 import ray.util.collective as cc
 import torch
@@ -33,6 +33,8 @@ class BaseConsumer:
         model_config: Dict[str, Any],
         plugin_config: Dict[str, Any],
         microbatch_size: int = 1,
+        save_interval: int = 100,
+        save_dir: str = "./model"
     ):
         self.num_producers = num_producers
         self.num_episodes = num_episodes
@@ -44,6 +46,8 @@ class BaseConsumer:
         self.num_recv_per_update = num_recv_per_update
         self.batch_size = batch_size
         self.microbatch_size = microbatch_size
+        self.save_interval = save_interval
+        self.save_dir = save_dir
         assert batch_size % microbatch_size == 0, "batch_size should be divisible by microbatch_size"
         self.num_microbatches = batch_size // microbatch_size
 
@@ -116,6 +120,14 @@ class BaseConsumer:
                                 pbar.set_postfix({"loss": loss})
                             i += 1
                     assert len(self.buffer) == 0
+                    if (step + 1) % self.save_interval == 0:
+                        if self.rank == 0:
+                            print(f"Start saving policy model at step {step + 1}.")
+                        save_path = os.path.join(self.save_dir, f"modeling-step-{step + 1}")
+                        self.booster.save_model(self.policy_model, save_path, shard=True)
+                        if self.rank == 0:
+                            print(f"Saved model checkpoint at step {step + 1} in folder {save_path}")
+
                     if episode != self.num_episodes - 1 or step != self.num_update_per_episode - 1:
                         print(f"[T{dist.get_rank()}] Sync model episode {episode} step {step}")
                         state_dict = self.state_dict()
diff --git a/applications/ColossalChat/coati/distributed/grpo_consumer.py b/applications/ColossalChat/coati/distributed/grpo_consumer.py
index 49240d8da..ead0c86e0 100644
--- a/applications/ColossalChat/coati/distributed/grpo_consumer.py
+++ b/applications/ColossalChat/coati/distributed/grpo_consumer.py
@@ -32,7 +32,7 @@ class GRPOConsumer(BaseConsumer):
         plugin_config,
         microbatch_size=1,
         num_generations=4,
-        use_wandb=False,
+        use_wandb=True,
     ):
         super().__init__(
             num_producers,
@@ -79,7 +79,7 @@ class GRPOConsumer(BaseConsumer):
 
         self.policy_loss_fn = PolicyLoss()
         self.global_step = 0
-        if self.rank == 0:
+        if use_wandb and  self.rank == 0:
             self.wandb_run = wandb.init(project="GRPO-Test", sync_tensorboard=True)
 
     def setup(self):