I am now interested in shifted symplectic structures.

I found Zhang's results about symplectic structures (2011, p.3-4, arXiv link, Comm. Anal. Geom. 2017) and Pantev–Toen–Vaquié–Vezzosi's results on shifted symplectic structures (2011, see p.1-2, arXiv link, Publ. IHES 2013).

I thought Zhang's results were completely included in the results of Pantev–Toen–Vaquié–Vezzosi. Is this idea correct? (About the reason of asking the question, see my comment below)

Any comment welcome! Thank you.