1. According to the query of Nanjing National Defense Park Company, search for "Nanjing National Defense Park Reservation" on WeChat, and click "Buy Tickets" under the search results.

2. Enter the ticket purchasing page and click "Free Booking" at the bottom right.

3. Enter the free reservation page, select the date of visit and other information, and click "Go to make an appointment".

4. After the reservation is successful, the words "successful reservation" will be displayed on the page.