Hello, in this situation, if the first two characters are a successfully registered trademark, and if you add Tang, Fu, Xuan after this, the distinctiveness of these types is not strong, even if the application success rate Not big. In the past few years, there were successful registrations after adding such words, but the success rate of subsequent applications was not very high. It is not recommended to apply for registration. I hope my answer will be helpful to you. I hope you will adopt it. Thank you.