New York-based Proskauer Rose has added a partner in Beijing.

Yong Ren joins from the Hong Kong office of Mayer Brown JSM, where he advised private investment funds on formation, management, and regulatory matters. He has previously acted for Carlyle Group, Blackstone Group, and PIMCO, among others.

Ren joined Mayer Brown as an associate in 2010 and became a partner in 2011. Prior to moving to Asia with Mayer Brown, he worked in New York for Ropes & Gray and, before that, Simpson Thacher & Bartlett.

Proskauer now has six lawyers working in its Beijing office, including five partners, according to its website. The firm has about 750 lawyers worldwide.