Chinese officials and social media played up Pakistan’s claims of shooting down Indian fighter planes to showcase Chinese tech superiority, even though there was no evidence to support Islamabad’s assertion. China, for the first time, has confirmed that it provided on-site technical support to Pakistan during the four-day conflict with India last year, official media reports here said. China’s state broadcaster CCTV on Thursday aired an interview with Zhang Heng, an engineer from the Aviation Industry Corporation of China’s (AVIC) Chengdu Aircraft Design and Research Institute, a key developer of China’s advanced fighter aircraft and unmanned aerial vehicle design. Zhang had provided technical support to Pakistan during the four-day conflict last May, Hong Kong-based South China Morning Post reported, quoting CCTV. Pakistan’s air force operates a fleet of Chinese-made J-10CE jets, produced by an AVIC subsidiary.…