China, a top arms exporter, is facing big questions about its weapons after failures in key battles. In Operation Sindoor last May, Indian forces destroyed Pakistani defenses that relied heavily on Chinese air defence systems like the HQ-9. These systems failed to stop missile attacks, including those by the BrahMos missile. Meanwhile, a swift US raid in Venezuela captured President Nicolás Maduro and his wife. The raid highlighted major problems with China’s military gear supplied to Venezuela. The US used advanced electronic warfare planes called EA-18 Growlers to jam Chinese radars and communications. Venezuela’s Chinese-built JY-27A radar, claimed to detect stealth jets like the F-35, was slow and blind to US stealth aircraft. This failure embarrassed China and revealed serious flaws in its air defence exports. Venezuela also used Russian S-300 missile systems and Pantsir-S1 guns, but none fired during the US operation. The entire raid took less than three hours, with US forces quickly capturing the Venezuelan leaders and flying them away. Some Chinese analysts argue that the US fought a weaker enemy, but these events still exposed China’s weapons’ limits. Pakistan gets about 82% of its defense gear from China. Operation Sindoor showed cracks in Chinese-made air defense missiles and fighter jets used by Pakistan. Missiles like the PL-15 often failed, and fighter jets like J-10C and JF-17 made little impact. These repeated military failures hurt China’s image as a reliable arms supplier and give an edge to rivals like India that highlight their weapons' proven combat success.