Judging from the situation you mentioned, it is necessary to conduct a trademark rejection review. If the trademark is rejected due to an absolute prohibition clause or an identical prior right, then there is no need for you to conduct a rejection review, because it will not succeed.

But there is a certain difference between the "Belle language" and "Belle" you mentioned. As long as the review is done well, the success rate can be around 70%.

Guangxin Fangcheng Intellectual Property Agent Fan Xiaodong will answer your questions and hope it will be helpful to you.