Because there are seven and three in this sentence, it refers to the number 7, so the three numbers are 737.
Qifeng refers to Qifeng Mountain, also known as Ding Qishan, which was called Kistler Mountain in ancient times. It belongs to the southern foot of Funiu Mountain and the upper reaches of Lijiang River in Huaihe River system, with a total area of 5 100 hectares and a forest coverage rate of 76%.