Generally, you can check it on the website of your provincial industrial and commercial bureau. There will be a list of famous trademarks on it. Enter the name of the trademark you want to query in the search bar, then enter the four words "famous trademark" after a space. Click to search. Whether it is a famous trademark depends on whether the search results contain information about the famous trademark assessment of this trademark. If it is a famous trademark, it can generally be searched out in this way.