The incident Tuesday occurred at the Huamao industrial park in Shenzen, a major city in the province in the southern tip of mainland China. Guangdong, adjacent to Hong Kong and Macau, has been hit by major flooding caused by heavy rainstorms that have claimed at least 33 lives.
At the road cave-in site, rescuers retrieved five bodies from a pit more than 13 feet deep, Xinhua News Agency reported. Search efforts continued Wednesday at the site.
It was the second such incident this month.
On May 6, five people died after being buried in a subway line cave-in in northwest China's Shaanxi province.
Xinhua reported nine people were working underground when the line collapsed. Rescuers managed to save the other four. Authorities were investigating the incident.