Not appropriate. According to the information of Dianping.com, wearing a light-colored skirt to take photos in Blue Moon Valley looks good, while a little black dress is dark and solemn, so it is not suitable for going to Blue Moon Valley. Blue Moon Valley is located at the eastern foot of Yulong Snow Mountain in Yulong Naxi Autonomous County, Lijiang City, Yunnan Province. It is commonly known as "Baishui River" and is named after the blue lake and crescent valley.