[China sailors shipping Panama Canal]AP Photo/Arnulfo Franco * Chinese President Xi Jinping signed a decree that includes improving confidentiality for military events, overseas cooperation, and arms fairs. * The changes are in line with the Chinese military's increasing engagement with foreign counterparts, expert says. * Visit Business Insider's homepage for more stories. China's military has tightened confidentiality rules for overseas cooperation and arms fairs as the People's Liberation Army steps up exchanges with its foreign counterparts. President Xi Jinping has signed a decree to improve confidentiality, including for important military events, overseas publicity, exchanges with other militaries, and for arms fairs abroad, the official PLA Daily reported on Wednesday. Xi also chairs the powerful Central Military Commission.SEE THE REST OF THE STORY AT BUSINESS INSIDERNOW WATCH: 5 giant Chinese infrastructure projects that are reshaping the world SEE ALSO: * China's navy is tightening rules for the crew of its first home-built aircraft carrier to combat coronavirus * China's navy keeps getting bigger, and the US is stockpiling ship-killer missiles * The US and Greece held a live-fire military exercise at the foot of Mount Olympus SEE ALSO: CHINA'S NAVY IS TIGHTENING RULES FOR THE CREW OF ITS FIRST HOME-BUILT AIRCRAFT CARRIER TO COMBAT CORONAVIRUS