I'm a 25-year-old who's worked at McKinsey and landed a director-level tech job — My secret to success? Biz rizz.

I'm a 25-year-old who's worked at McKinsey and landed a director-level tech job — My secret to success? Biz rizz.

Zeng advised ending every interaction with the question, "How can I help?"Josie Elias/Getty ImagesBuilding relationships well is widely considered to be a desirable soft skill in the workplace.You might call it 'networking.' But Langni Zeng has been calling it 'biz rizz.'Zeng, who learned people skills at McKinsey, shared her top tips for developing 'biz rizz.'This as-told-to essay is based on a transcribed conversation with 25-year-old Langni Z…