whether a trademark is infringing depends on what goods are used. The principle of trademark law is that you cannot be the same as or similar to the registered trademark of others. If someone else registers "Great Wall" and "Fu Man Xing" on clothes, you will be infringed by using "Great Wall Fu Man Xing" on clothes. If you use it on a mobile phone, but others are not registered, then you can use it. You can check it on China Trademark Network.