Chinese and US officials have begun their second high-level dialogue on cybercrime in Beijing.

China's Minister of Public Security Guo Shengkun and US Under Secretary for National Protection and Programs Directorate at the Department of Homeland Security, Suzanne Spaulding hosted the event on Tuesday.

US Attorney General Loretta Lynch and homeland security chief Jeh Johnson were supposed to lead the delegation, but they had to cancel because of the Orlando mass shooting. The two-day meeting will see discussion on heated issues on cyber security.

"I hope through this high-level dialogue, the two nations will take fighting cyber crime as a starting point, exchange information on heated issues and problems, clear the air, and establish a cooperation mechanism, so as to help enhance internet security," said Zhao Liang, IT expert.