change default system message to "follow my instructions carefully"

src/app.tsx

@@ -32,7 +32,7 @@ export interface ChatStore {
 const _defaultAPIEndpoint = "https://api.openai.com/v1/chat/completions";
 const newChatStore = (
   apiKey = "",
-  systemMessageContent = "你是一个有用的人工智能助理，根据我的提问和要求回答我的问题",
+  systemMessageContent = "Follow my instructions carefully",
   apiEndpoint = _defaultAPIEndpoint,
   streamMode = true,
   model = "gpt-3.5-turbo-0613"

src/chatbox.tsx

@@ -321,10 +321,8 @@ export default function ChatBOX(props: {
           />
         ))}
         {showGenerating && (
-          <p className="p-2 my-2 animate-pulse dark:text-white">
+          <p className="p-2 my-2 animate-pulse dark:text-white message-content">
-            {generatingMessage
+            {generatingMessage || "生成中，最长可能需要一分钟，请保持网络稳定"}
-              ? generatingMessage.split("\n").map((line) => <p>{line}</p>)
-              : "生成中，最长可能需要一分钟，请保持网络稳定"}
             ...
           </p>
         )}