evidence: In April 2013 India claimed, referencing their own perception[54] of the Line of Actual Control (LAC) location, that Chinese troops had established a camp in the Daulat Beg Oldi sector, 10 km (6.2 mi) on their side of the Line of Actual Control. This figure was later revised to a 19 km (12 mi) claim. According to Indian media, the incursion included Chinese military helicopters entering Indian airspace to drop supplies to the troops. However, Chinese officials denied any trespassing having taken place.[55][56] Soldiers from both countries briefly set up camps on the ill-defined frontier facing each other, but the tension was defused when both sides pulled back soldiers in early May.[57] In September 2014, India and China had a standoff at the LAC, when Indian workers began constructing a canal in the border village of Demchok, Ladakh, and Chinese civilians protested with the army's support. It ended after about three weeks, when both sides agreed to withdraw troops.[58] The Indian army claimed that the Chinese military had set up a camp 3 km (1.9 mi) inside territory claimed by India.[59] According to scholar Harsh V. Pant, China gains territory with every incursion.[60]