How to Speak with Authority
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Bill Reichert Endorses Cynthia Zhai's Keynote speaking
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Voice Training: Winning Sales with a Powerful Voice
12:07
You Are Your Voice | Cynthia Zhai | TEDxTanglin Road
4:36
3 Criteria of a Persuasive Voice
7:45
Voice Projection: Can people hear you at the back of the room?
4:44
The Power of Your Voice Lies in ...
16:38
The Transformative Power of Your Voice | Cynthia Zhai | TEDxHarkerSchool
9:53