| 1 | After middle stage of Showa period, the development of the walled city of Hengchun started going to the mature era of the city. | |
| 2 | It is supposed that the crust of the Hengchun Ridge is continental crust, which extends from the Hengchun Peninsula. | |
| 3 | The beginning era of the city means the time that Ching government reigned over Hengchun region officially. | |
| 4 | Besides, the public construction was increasing with the level of administrative division rising. | |
| 5 | Because of the insufficient records and literature, there are many faults about the space of the walled city of Hengchun. |