BEIJING - China is conducting scientific testing and training exercises for its aircraft carrier, Defense Ministry spokesman Yang Yujun said Thursday.

It takes time for weapons and equipment to be developed from scientific research to military use, Yang said at a monthly press briefing.

"Right now, China is working on scientific testing and training exercises for the aircraft carrier platform and other new weapons according to the schedule. The follow-up work will be carried out according to the progress of the activities," he said.