Chinese police have broken up two major child trafficking gangs and freed 181 children, officials say.
Authorities arrested 802 suspects on Monday in an operation across the country, the Public Security Ministry said in a statement.
Children kidnapped in the country are often sold for adoption, or as labour and household servants.
These policies, some say, have created a thriving underground market for buying children.
In the latest operation, the children were rescued from traffickers in 15 regions and provinces, including Hebei, Shandong, Henan, Sichuan, Yunnan.
Investigations that led to the current round of arrests began in December 2011 when four suspects were caught in Henan province while attempting to sell four babies.
A ''most-wanted'' suspect, Shao Zhongyuan, was caught in Pingyi county, Shandong province, the ministry said.
He was alleged to be from a gang that trafficked more than 100 children. Several other key suspects were also detained, police said.
The ministry released a report in March 2011 saying that police rescued tens of thousands of abducted children and women.
It highlighted one raid against a gang trafficking Chinese women to Angola for prostitution, adding that 19 women were rescued and 16 people were arrested.
Greater freedom of movement as a result of China's economic reforms is thought to have also made it easier for trafficking gangs to operate.