The family of a local engineer who was murdered in Saudi Arabia last year hope to secure Beijing's assistance after getting little from Hong Kong's government.
Relatives of Francis Leung Kar-keung are looking this week to meet Lu Xinhua, the city's outgoing commissioner of the mainland's foreign ministry.
They want Lu to urge Beijing to pressure the Saudi authorities to delay the trial of Leung's alleged killer.
In 2009, Leung moved to Saudi Arabia to work as a senior signal systems manager on a railway project - led by China Railway Construction Corporation - in the city of Mecca.
On March 10 last year, his family was told that his body - containing multiple knife wounds to the neck and shoulders - had been found stuffed under a kitchen sink.
They became sceptical when they learnt that a security guard weighing only 45.5kg had been arrested for allegedly killing Leung, who weighed more than 82kg.