Dhaka, June 20 -- A Chinese naval drill near Japan has sparked concern from Tokyo, which in recent days lodged a protest with Beijing and made the rare decision to publicly disclose Chinese military movements.In the last few weeks China's two aircraft carriers, the Shandong and the Liaoning, have been conducting simultaneous drills in the Pacific, in an unprecedented move.Chinese fighter jets have done hundreds of landings and take-offs from the carriers. A few came close to Japanese surveillance planes, prompting Tokyo to convey its "serious concerns" to Beijing.China has said its activities are consistent with international law and accused Japan of conducting "dangerous moves".On Tuesday, the Japanese defence ministry released a map traci...