The lawyer added it is urgent to enhance online supervision in these countries.
Zeng Xinhua, a researcher in criminal law at Beijing Normal University, agreed with Liu, saying legal cooperation agreements will be the most effective way to curb cross-border cases.
Currently, the punishment for economic crimes is not harsh enough to deter criminals, Zeng said.
"The most severe penalty for fraud is a life sentence," he added.
To help people avoid being victimized by economic criminals, Bai Shanyun, vice-president of the Beijing No 2 Intermediate People's Court, said they will provide legal advice to administrations with supervision loopholes, such as the forestry, industrial and commercial departments.