We bridge markets, business cultures and skills to create value, externally from new Strategic Partnerships or internally through Process and Information System Optimization.

O'Sheng is a boutique consultancy firm mainly based on the skillset of its founder Jean-Sebastien CHEUNG-AH-SEUNG, who works with a small team of collaborators and a wide network of partners.





Trilingual serial entrepreneur with engineering and business educational background from the top universities of France and China and more than 10 years of business experience in both countries

Jean-Sébastien CHEUNG-AH-SEUNG, a.k.a simply “JS”, holds a Master’s of Engineering in Internet, Networks and Security from TELECOM ParisTech (Paris), a Master in Business Administration from Tsinghua University (Beijing). He is also the author a of Master’s Thesis written in Chinese on Chinese Business Culture and a certificate holder of the Program on Negotiation from the Harvard Law School.


French with both French and Chinese origins, trilingual in French, English and Mandarin, JS is managing, as founder and CEO or partner, a dozen of companies in France and China.


Apart from his involvement as CEO or partner, JS is also the representant in China of the China-Reunion Chamber of Commerce. Regularly holding conferences on the economic environment in China, JS was also chosen as the Patron of the 2014 Class of the Sciences Faculty of Reunion Island University and also as an “étoile” (star) in the “L’Etoile des Dodos”, a book gathering a selection of personalities from Reunion Island having a key impact in the World. Since 2011, Jean-Sebastien is also a researcher at the Charhar Institute, a Chinese diplomatic think-tank.


In his free time, JS is a rugby and squash player, passionate about Burgundy wines and fascinated by the mysteries of life and genetics as well as by the wonders of the universe with the theory of the general relativity and by the the world of quantum physics.