Summary | Yoga instructor Nora Lim teaches with the help of a
microphone and headphones during a silent disco yoga class in
Sun Yat-sen Memorial Park in Hong Kong, China, Nov 1, 2015.
During silent disco yoga, the teacher instructs the students
via a microphone and wireless headphones, making it easier to
communicate in public places without the need for a PA system. ...
chinadaily.com.cn | 28 January 2016