Police mounted four operations from May 5 to 12 in Dongguan City and Shenzhen to nab the suspects, who allegedly used social media to commit fraud, Shenzhen police said.
The suspects, organised as a pyramid scheme, registered WeChat and QQ accounts, sought male victims and swindled their money, it said in a statement.
The sum of money taken from the victims has not yet been published.
According to police documents, a victim, surnamed Liu, was cheated out of 8,000 yuan (about USD 1,200) after he befriended a stranger through the "shake your phone" function on WeChat.