No need. At present, Nanjing National Defense Park is free of tickets, just sign in. Nanjing National Defense Park used to be a military stronghold, and now it has become a famous place for national defense education and patriotism education in Nanjing. National Defense Park consists of National Defense Education Museum, Services and Arms Museum, Yingmo Museum, National Defense Science and Technology Museum, Heavy Weapons Field, Simulation Exercise Field and Military Sports and Entertainment Park.