1, lanling county 1724 square kilometers, Zaozhuang 4564 square kilometers.
2. Lanling County was first established in the Spring and Autumn Period. It is the earliest county town in Shandong Province. It used to be a pavilion in the state of Lu. It was occupied by Chu State in 380 BC, and originally belonged to Lanling County. Lanling is a famous old revolutionary base area in War of Resistance against Japanese Aggression period.
Zaozhuang formed a village in the Tang and Song Dynasties, which was named after many jujube trees formed a village. Zaozhuang is the first cross-strait exchange base and national fitness yangko city in China, which is famous at home and abroad because of the battle between Flying Tigers and Taierzhuang.