1. Find the emoticon package you want to query in QQ emoticon package and write down its name or keywords.

2. Open the QQ official website or official WeChat official account to find relevant news or announcements, and find the information related to the release or update of emoticons.

3. Use the search engine, enter the name or keyword of the expression in the search field, and combine the keywords such as "QQ expression development time" and "QQ expression history" for online search.

4. Refer to the user discussion forums, social media or related technical forums of QQ emoticons, and look for comments or discussions from other users or experts on the emoticons, sometimes mentioning its development time or launch time range.

5. None of the above methods can find a specific development time. You can try to contact Tencent customer service or QQ official customer service and ask them for specific information about the development time of emoticons. QQ is a widely used instant messaging software, originally developed and launched by Tencent in China. It is a multi-functional social platform, and users can communicate in various forms such as text chat, voice call, video call, sending pictures and files through QQ.