In February 2014, the government launched a crackdown on the sex trade in Dongguan, which has been dubbed China's "Sin City."
More than 2,000 hotels, saunas and massage parlors that catered to the city's migrant workers and visiting buyers were shut down, according to state media.
Thousands of people were arrested, including suspected operators and organizers of prostitution, alongside high-ranking officials and corrupt police officers. The city's vice mayor, who was also head of the city's public security bureau, Yan Xiaokang, was removed from his posts.
The raids lasted several months and their impact is still being felt more than a year later.