China has conducted a massive military exercise in the high altitude Qinghai-Tibet Plateau, close to the disputed borders with India, during which it has for the first time tested the multi-role J-10 fighter jets. The People's Liberation Army (PLA) Air Force have conducted ground attack training over the Qinghai-Tibet Plateau, the "first operation of its kind", official media here reported on Thursday. According to a report and photos released by PLA Daily, the ground crew of J-10 regiment fuelled the fighters and loaded ammunition on the 3,500-meter-high plateau at temperatures below -20 C. The fighters scrambled and attacked the targets with conventional as well as laser-guided bombs. Sorties were made both during the day and at night, the report said. It was the second time that the official media released photos of the home made J-10 fighter using laser-guided bombs. The exercises were highlighted today by another official daily - The Global Times. The rare display of the news about exercises was seen as a message to the Indian side, which is also beefing up its border regions along the Line of Actual Control, (LAC) by deploying its top end fighter aircraft. The J-10, which was also being sold to Pakistan, took part in exercises in October last year conducted by PLA incorporating air forces and air defence units as well as armour and artillery units in Tibet Autonomous Region.