diff --git a/gfa_core/mas/agents/conversation_tools.py b/gfa_core/mas/agents/conversation_tools.py
index 7c253712e..42bd2c9b5 100644
--- a/gfa_core/mas/agents/conversation_tools.py
+++ b/gfa_core/mas/agents/conversation_tools.py
@@ -53,6 +53,7 @@ class ConversationToolRegistry:
         *,
         workflow_id: str | None = None,
         guidance: bool = False,
+        language: str = "zh",
     ) -> str:
         text = str(query or "").strip()
         if self._analysis_handoff_resolver is None:
@@ -62,6 +63,7 @@ class ConversationToolRegistry:
                 text,
                 workflow_id=workflow_id,
                 guidance=guidance,
+                language=language,
             )
             or ""
         ).strip()
diff --git a/gfa_core/mas/agents/router_runtime.py b/gfa_core/mas/agents/router_runtime.py
index 2c71aec51..80cccdbf3 100644
--- a/gfa_core/mas/agents/router_runtime.py
+++ b/gfa_core/mas/agents/router_runtime.py
@@ -1405,6 +1405,7 @@ class RouterRuntime:
                 effective_query,
                 workflow_id=decision.workflow_id,
                 guidance=decision.analysis_request_kind == "guidance",
+                language=language,
             )
             if decision.analysis_request_kind == "guidance":
                 proposal_query = (
@@ -1908,7 +1909,7 @@ class RouterRuntime:
                     tool_trace=tool_trace,
                     interaction_kind=decision.interaction_kind,
                 )
-                )
+                
             if (
                 semantic_reason is None
                 and decision.goal == "project_status"