diff --git a/pkg/third-party/dashscope/dashscope.go b/pkg/third-party/dashscope/dashscope.go
index 6343939..c9a76f5 100644
--- a/pkg/third-party/dashscope/dashscope.go
+++ b/pkg/third-party/dashscope/dashscope.go
@@ -40,7 +40,7 @@ func (d *Dashscope) ProcessText(fromUserName, toUserName, content string) interf
 		Model: "qwen-turbo",
 		Input: Input{
 			Messages: []Message{
-				{Role: "system", Content: "你是一个AI助手，保持回复内容尽量简短"},
+				{Role: "system", Content: "你是一个AI助手，尽量保证回复内容在200个字符以内"},
 				{Role: "user", Content: content},
 			},
 		},
diff --git a/pkg/third-party/openai/openai.go b/pkg/third-party/openai/openai.go
index 561e33a..e1870ec 100644
--- a/pkg/third-party/openai/openai.go
+++ b/pkg/third-party/openai/openai.go
@@ -52,7 +52,7 @@ func (openai *OpenAI) ProcessText(fromUserName, toUserName, content string) inte
 	request := openaigo.ChatCompletionRequestBody{
 		Model: "gpt-3.5-turbo",
 		Messages: []openaigo.ChatMessage{
-			{Role: "system", Content: "你是一个AI助手，保持回复内容尽量简短"},
+			{Role: "system", Content: "你是一个AI助手，尽量保证回复内容在200个字符以内"},
 			{Role: "user", Content: content},
 		},
 	}