diff --git a/metagpt/actions/action_node.py b/metagpt/actions/action_node.py
index 31e4cc0fc..48372f790 100644
--- a/metagpt/actions/action_node.py
+++ b/metagpt/actions/action_node.py
@@ -17,7 +17,7 @@ from pydantic import BaseModel, Field, create_model, model_validator
 from tenacity import retry, stop_after_attempt, wait_random_exponential
 
 from metagpt.actions.action_outcls_registry import register_action_outcls
-from metagpt.const import USE_CONFIG_TIMEOUT
+from metagpt.const import MARKDOWN_TITLE_PREFIX, USE_CONFIG_TIMEOUT
 from metagpt.llm import BaseLLM
 from metagpt.logs import logger
 from metagpt.provider.postprocess.llm_output_postprocess import llm_output_postprocess
@@ -113,7 +113,7 @@ Follow format example's {prompt_schema} format, generate output and make sure it
 """
 
 
-def dict_to_markdown(d, prefix="- ", kv_sep="\n", postfix="\n"):
+def dict_to_markdown(d, prefix=MARKDOWN_TITLE_PREFIX, kv_sep="\n", postfix="\n"):
     markdown_str = ""
     for key, value in d.items():
         markdown_str += f"{prefix}{key}{kv_sep}{value}{postfix}"
diff --git a/metagpt/actions/design_api.py b/metagpt/actions/design_api.py
index e5f038c7c..1a6178f5c 100644
--- a/metagpt/actions/design_api.py
+++ b/metagpt/actions/design_api.py
@@ -70,12 +70,12 @@ class WriteDesign(Action):
         return ActionOutput(content=changed_files.model_dump_json(), instruct_content=changed_files)
 
     async def _new_system_design(self, context):
-        node = await DESIGN_API_NODE.fill(context=context, llm=self.llm)
+        node = await DESIGN_API_NODE.fill(context=context, llm=self.llm, schema=self.prompt_schema)
         return node
 
     async def _merge(self, prd_doc, system_design_doc):
         context = NEW_REQ_TEMPLATE.format(old_design=system_design_doc.content, context=prd_doc.content)
-        node = await REFINED_DESIGN_NODE.fill(context=context, llm=self.llm)
+        node = await REFINED_DESIGN_NODE.fill(context=context, llm=self.llm, schema=self.prompt_schema)
         system_design_doc.content = node.instruct_content.model_dump_json()
         return system_design_doc
 
diff --git a/metagpt/actions/di/execute_nb_code.py b/metagpt/actions/di/execute_nb_code.py
index e78c5acf3..c43d8bb57 100644
--- a/metagpt/actions/di/execute_nb_code.py
+++ b/metagpt/actions/di/execute_nb_code.py
@@ -13,9 +13,10 @@ from typing import Literal, Tuple
 
 import nbformat
 from nbclient import NotebookClient
-from nbclient.exceptions import CellTimeoutError, DeadKernelError
+from nbclient.exceptions import CellExecutionComplete, CellTimeoutError, DeadKernelError
+from nbclient.util import ensure_async
 from nbformat import NotebookNode
-from nbformat.v4 import new_code_cell, new_markdown_cell, new_output
+from nbformat.v4 import new_code_cell, new_markdown_cell, new_output, output_from_msg
 from rich.box import MINIMAL
 from rich.console import Console, Group
 from rich.live import Live
@@ -25,31 +26,56 @@ from rich.syntax import Syntax
 
 from metagpt.actions import Action
 from metagpt.const import DEFAULT_WORKSPACE_ROOT
-from metagpt.logs import ToolLogItem, log_tool_output, logger
+from metagpt.logs import ToolLogItem, log_llm_stream, log_tool_output, logger
 
 INSTALL_KEEPLEN = 500
 
 
+class RealtimeOutputNotebookClient(NotebookClient):
+    """Realtime output of Notebook execution."""
+
+    async def _async_poll_output_msg(self, parent_msg_id: str, cell: NotebookNode, cell_index: int) -> None:
+        """Implement a feature to enable sending messages."""
+        assert self.kc is not None
+        while True:
+            msg = await ensure_async(self.kc.iopub_channel.get_msg(timeout=None))
+            self._send_msg(msg)
+
+            if msg["parent_header"].get("msg_id") == parent_msg_id:
+                try:
+                    # Will raise CellExecutionComplete when completed
+                    self.process_message(msg, cell, cell_index)
+                except CellExecutionComplete:
+                    return
+
+    def _send_msg(self, msg: dict):
+        msg_type = msg.get("header", {}).get("msg_type")
+        if msg_type not in ["stream", "error", "execute_result"]:
+            return
+
+        log_llm_stream(output_from_msg(msg))
+
+
 class ExecuteNbCode(Action):
     """execute notebook code block, return result to llm, and display it."""
 
     nb: NotebookNode
-    nb_client: NotebookClient
+    nb_client: NotebookClient = None
     console: Console
     interaction: str
     timeout: int = 600
+    enable_realtime_output: bool = False
 
-    def __init__(
-        self,
-        nb=nbformat.v4.new_notebook(),
-        timeout=600,
-    ):
+    def __init__(self, nb=nbformat.v4.new_notebook(), timeout=600, enable_realtime_output=False):
         super().__init__(
             nb=nb,
-            nb_client=NotebookClient(nb, timeout=timeout, resources={"metadata": {"path": DEFAULT_WORKSPACE_ROOT}}),
             timeout=timeout,
             console=Console(),
             interaction=("ipython" if self.is_ipython() else "terminal"),
+            enable_realtime_output=enable_realtime_output,
+        )
+        self.nb_client = self._resolve_nb_client()(
+            nb, timeout=timeout, resources={"metadata": {"path": DEFAULT_WORKSPACE_ROOT}}
         )
 
     async def build(self):
@@ -175,6 +201,8 @@ class ExecuteNbCode(Action):
         """set timeout for run code.
         returns the success or failure of the cell execution, and an optional error message.
         """
+        self._try_realtime_output(cell)
+
         try:
             await self.nb_client.async_execute_cell(cell, cell_index)
             return self.parse_outputs(self.nb.cells[-1].outputs)
@@ -225,6 +253,13 @@ class ExecuteNbCode(Action):
         else:
             raise ValueError(f"Only support for language: python, markdown, but got {language}, ")
 
+    def _resolve_nb_client(self) -> NotebookClient:
+        return RealtimeOutputNotebookClient if self.enable_realtime_output else NotebookClient
+
+    def _try_realtime_output(self, cell: NotebookNode):
+        if self.enable_realtime_output:
+            log_llm_stream(cell)
+
 
 def remove_escape_and_color_codes(input_str: str):
     # 使用正则表达式去除jupyter notebook输出结果中的转义字符和颜色代码
diff --git a/metagpt/actions/write_prd.py b/metagpt/actions/write_prd.py
index b66887164..220cfa52e 100644
--- a/metagpt/actions/write_prd.py
+++ b/metagpt/actions/write_prd.py
@@ -105,7 +105,9 @@ class WritePRD(Action):
         project_name = self.project_name
         context = CONTEXT_TEMPLATE.format(requirements=req, project_name=project_name)
         exclude = [PROJECT_NAME.key] if project_name else []
-        node = await WRITE_PRD_NODE.fill(context=context, llm=self.llm, exclude=exclude)  # schema=schema
+        node = await WRITE_PRD_NODE.fill(
+            context=context, llm=self.llm, exclude=exclude, schema=self.prompt_schema
+        )  # schema=schema
         await self._rename_workspace(node)
         new_prd_doc = await self.repo.docs.prd.save(
             filename=FileRepository.new_filename() + ".json", content=node.instruct_content.model_dump_json()
diff --git a/metagpt/const.py b/metagpt/const.py
index 213cd4f1e..979f00cf4 100644
--- a/metagpt/const.py
+++ b/metagpt/const.py
@@ -140,4 +140,8 @@ LLM_API_TIMEOUT = 300
 # Assistant alias
 ASSISTANT_ALIAS = "response"
 
+# Markdown
+MARKDOWN_TITLE_PREFIX = "## "
+
+# Reporter
 METAGPT_REPORTER_DEFAULT_URL = os.environ.get("METAGPT_REPORTER_URL", "")
diff --git a/metagpt/software_company.py b/metagpt/software_company.py
index f290d497a..17e299135 100644
--- a/metagpt/software_company.py
+++ b/metagpt/software_company.py
@@ -7,7 +7,6 @@ from pathlib import Path
 import typer
 
 from metagpt.const import CONFIG_ROOT
-from metagpt.utils.project_repo import ProjectRepo
 
 app = typer.Typer(add_completion=False, pretty_exceptions_show_locals=False)
 
@@ -25,7 +24,7 @@ def generate_repo(
     reqa_file="",
     max_auto_summarize_code=0,
     recover_path=None,
-) -> ProjectRepo:
+):
     """Run the startup logic. Can be called from CLI or other Python scripts."""
     from metagpt.config2 import config
     from metagpt.context import Context
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index ffc25ac05..9c3436172 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -37,7 +37,7 @@ from PIL import Image
 from pydantic_core import to_jsonable_python
 from tenacity import RetryCallState, RetryError, _utils
 
-from metagpt.const import MESSAGE_ROUTE_TO_ALL
+from metagpt.const import MARKDOWN_TITLE_PREFIX, MESSAGE_ROUTE_TO_ALL
 from metagpt.logs import logger
 from metagpt.utils.exceptions import handle_exception
 
@@ -65,7 +65,7 @@ class OutputParser:
     @classmethod
     def parse_blocks(cls, text: str):
         # 首先根据"##"将文本分割成不同的block
-        blocks = text.split("##")
+        blocks = text.split(MARKDOWN_TITLE_PREFIX)
 
         # 创建一个字典，用于存储每个block的标题和内容
         block_dict = {}