I need to tell people to not come to Blackbelt gym. I practice BJJ for two and half year at black belt. When I first join it was a very good gym and Instructor his name is Manny Almeida was a good teacher. Manny and manager of gym and Krav Maga teacher Alex (张韡耀) had problem and Manny no longer taught him. When Alex do not come to class everything is good and we all have a good feeling but because Alex and Manny have problem Manny go back to Brazil. We have another teacher called Hudson Rocha from Brazil. Hudson was good man but did not speak Chinese and English not good so we are not able understand him. We like Hudson and he was a good man and good teacher. Hudson would talk English aND Alex would tell us with Chinese, Alex must return to BJJ class to do this now class is not good. Alex shout at student and older student everyday and make them afraid. Black Belt have four blue belts and 1 purple belt but now they all leave. Everyoner leave the class because of him. Both Alex and Oliver are not good and will cheat you. Manny, Hudson do not like Alex and will not come back. Everyone at gym was unhappy because now there is no real teacher. Only Alex. Remember him. He is not a good man. His mind have some problems.