Long Venture Partners has quietly launched as a venture capital firm focused on consumer-related big data and AI startups. It is expected to focus on Silicon Valley-based startups, but with a cross-border emphasis on leveraging China.

The firm is co-led by Sam Yu, a onetime investment pro with Chinese venture firm SAIF Partners, and Ernestine Fu, who remains listed as a venture partner with Alsop Louie Partners (where her deals have included Gfycat and Wickr). Both received graduate degrees from Stanford University.

According to an SEC filing, Long Venture Partners is raising upwards of $50 million for its debut fund, with $20 million already committed.

Yu declined to comment on the new firm, when contacted by Fortune.