Hong Kong's Taichi Kho extended his lead to four shots before thunderstorms brought an early end to play on day 3 of the World City Championship in Fanling.
Kho was at 13-under-par after two holes when play was halted, with his playing partner Miguel Tabuena at 9-under.
Four players, including New Zealand's Michael Hendry and Thai star Jazz Janewattananond, are tied for third two shots further back.