I just found some news in libcom forum: "10,000 workers strike, take to streets in collective action for higher wages in Dongguan, Guangdong" - libcom.org-

From an Aigao worker:

One reason [for the action] is the imminent promulgation of the new Labour Law. Another reason is low wages (CNY690 [about GBP46] monthly basic of which CNY240 is deducted for meals and 50 for accommodation, so everyone can work out for themselves what sort of pay we end up with!). The biggest cause has been a hike in the meals deduction while wages have stayed static and the food's terrible.