A man in Shenzhen has been making a living by crashing cars for nearly three years, averaging to one crash every three days, police said after his arrest. The man, surnamed Li, filed 334 insurance claims between the end of 2010 and May 2013, costing insurers millions of yuan and pocketing some 357,000 yuan (HK$450,000), Shenzhen TV reported , citing police in the Guangdong city. In his scheme, Li took advantage of slow traffic during the morning and evening rush hours, when he needed to accelerate only a little to bump the car ahead, thereby avoiding major injury. He then bribed mechanics to increase the damage estimate on the invoice, pocketing the difference. The mechanics are also being investigated, police said. Li is one of two cases that have recently come to light of what many suspect has become a phenomenon in Shenzhen, with some netizens speaking of a "car crashing gang". The other case involved a man surnamed Peng from Jiangxi province, Southern Metropolis Daily reported . The former bus driver deliberately crashed into buses, extorting the drivers who feared repercussions from their jobs if they had to report the accident, the article said.