Eang Vuthy, a project manager for Bridges Across Borders, says the families have not received enough compensation to relocate.
Cambodian officials say they expect Hun Sen to sign even more deals with China on this visit.
At least 20 different Cambodians have shown their work at the gallery.
China has made great economic strides since the collapse of the Soviet Union, posting double-digit growth.
In a December report, OSJI says donors can push harder for wider indictments and great participation by leaders.
Administrators across Cambodia charge as much as $20 for documents required for marriage.
It is celebrated worldwide every Dec. 10 as Human Rights Day.
Some of the bridge survivors say they do not want to see the bridge reopened so soon—if ever.
Duk Srey Mom, who was 20, was born into a poor family, but was a pillar of her family’s well-being.
Sou Rasaly said he had hoped his future wife would recover, especially after showing promise for the first few days.
A government committee determined the stampede, which killed 353 people and injured nearly 400, was an accident.
The Mustin, which is commanded by an American-Cambodian, arrived in Preah Sihanouk province, for a five-day visit.