What traditional food does Nanjing beginning of autumn eat?

When I was in beginning of autumn, I would eat watermelon, longan and cold cakes.

Beginning of autumn is the first solar term in autumn, which indicates that hot summer is coming and autumn is coming. In the beginning of autumn solar term in old Nanjing, there is a custom of eating watermelon "gnawing at autumn", which means that it is unbearable in the hot summer. When you arrive in beginning of autumn, you must take a bite. Therefore, old Nanjing people will buy a big watermelon to go home in early autumn and eat it with their families. It is said that prickly heat in autumn can be avoided.