CHINA is the biggest long-term threat to the West, MI5 and the FBI warned last night. Beijing plans to ransack our secrets and steal technology, their bosses said. APChina is the biggest long-term threat to the West, MI5 and the FBI warned[/caption] It is using repression to shape the world in its favour, they added, in the first joint address in the agencies’ history. MI5 chief Ken McCallum said his spooks were running seven times more investigations into China than in 2018. FBI head Christopher Wray said it was opening one China-linked case every 24 hours. Mr McCallum said presumptions that closer ties with President Xi Jinping’s China would see it change were wrong. Read More on China HELL FACTORY Inside China's secret slaughterhouse where stolen pets are blowtorched as meat RED DAWN US could lose China war over Taiwan in a WEEK as 'simulations' show defeat He said: “The most game-changing challenge we face comes from an increasingly authoritarian Chinese Communist Party “It’s covertly applying pressure across the globe. It’s real and it’s pressing. We need to act.” Director Wray said China was drawing lessons from Russia’s attack on Ukraine and said there were fears China might try to forcibly take over Taiwan. He said Beijing had a vast spy network and a hacking programme “bigger than every other major country combined”. Most read in World News PLUNGE HORROR Final pic of nurse climbing 60ft to platform before she fell to her death RAPE HELL Brit dad accused of raping his own daughter on Crete holiday is CLEARED POOL DEATH Guests tried to save Brit who drowned on hol as ‘lifeguards were too far away’ IDIOT ON BOARD Brit chess prodigy, 18, 'said "I’m gonna blow plane up" on Snapchat in hoax' CRUEL END Mountaineer, 27, took grinning selfie for family before going eerily silent WATER PARK TRAGEDY Nurse, 23, dies after falling 70ft through hole on zip line platform China, he said, was the “biggest long-term threat” to the economies and national security of the UK and the US. He added that MI5, FBI and others in the free world made a “formidable team” to fight back.