Six judges hearing a loan dispute case in southern China were injured, two of them seriously, when the defendants doused them with sulphuric acid, state media said on Wednesday.
The acid attack in the Guangxi region came just a week after a man angry over a legal ruling in his divorce opened fire in a courthouse in central China, killing three judges and wounding three others.
In the most recent incident in the city of Wuzhou, the defendants - identified as a couple, Chen Hongsheng and Liu Fengjian - suddenly splashed the acid on the judges during the hearing, the Global Times reported.
The presiding judge and another justice suffered third-degree burns and could each lose sight in one eye, the report said, citing their treating physician.
The attackers were arrested. Their motive was not immediately clear.
In last week's shooting, a 46-year-old bank guard used a machine gun and two pistols to carry out his deadly assault in the city of Yongzhou, in Hunan province.
The assailant, Zhu Jun, was said to have been deeply angered by another court's ruling in his divorce three years ago, which awarded him 20,000 yuan (2,900 dollars) of the assets he held jointly with his wife.