Banks have been ordered to step up checks, part of wider efforts to strengthen oversight of cross-border capital flows.

The clampdown hits a route that Chinese investors use to trade U.S. and Hong Kong stocks, raising capital-control and ADR concerns...

Banks are requiring mainland investors to declare that investment funds originate from lawful offshore sources, as regulators widen a crackdown on illegal cross-border trading…

Banks have been ordered to step up checks, part of wider efforts to strengthen oversight of cross-border capital flows.