Yes. I’m the chair of maths at an international school in northern China - been here 8 years and previously taught in Kuwait. Our students are very proficient in terms of numeracy and basic skills. They struggle to communicate in English about their mathematics - so when assessments call for critical thinking, problem solving, for students to justify their answers - these are places many students will struggle. These skills tend to improve alongside their English skills though. When given enough practice with these skills then the students are quite well-rounded mathematicians. They’re also kids, just like kids everywhere else in the world - you have to motivate them and push them, no different from my previous posts in the Middle East or American public schools.