@brtraducoes
Hi, It’s a new mobile game developed by NetEase at https://h.163.com/. I think you are right, it could be a custom format. You can view the sample file at https://drive.google.com/file/d/1lbJPIYXmelJjsijD_jXGox4lB3MMGWak/view?usp=sharing
Thank you.