The Western Theater Command is mainly responsible for mountain warfare at the border area with India.
The pictures posted on the English version of the PLA website show a J-10 fighter jet and J-11 fighter jets conducting aerial combat training exercises in Western China on February 13, two days before Spring Festival.
The jets are attached to an aviation brigade of the air force under the PLA Western Theater Command, the post said. It is significant for China to strengthen control of airspace over the mountainous region, Song Zhongping, a Chinese military expert and TV commentator, told the Global Times on Tuesday.
"Strengthening the 3.5-generation fighter jets or even stationing more advanced fighters in the Western Theatre Command has been urgent for the PLA," Song said, adding that such upgrades have been usually first conducted in south and east theatre commands.
Considering that India possesses third-generation fighter jets, China's stationing of its 3.5-generation jets would be able to deal with any current threat from India, said Song. "With India importing new jets, China will continue strengthening its fighter jets in the Western Theatre Command," Song said.
During this year's week-long Spring Festival holiday, the PLA has not stop training. The PLA website reported that the PLA Air Force conducted training at the foot of the Qilian Mountains in Northwest China's Gansu Province, and a navy aviation regiment was on patrol in Jiaodong Peninsula, East China's Shandong province.