Zhengzhou IELTS test environment is still good and not noisy. During the test, there will be relevant personnel to maintain the quiet environment around. The test center I'm talking about is the International Education College of Zhengzhou Institute of Light Industry, where I took the exam. The environment is good, the facilities are good, and the teachers are very caring. I think spoken English will be a little better than Tianjin. I hope you succeed.