Where is the location of Hanhai?

The Journey to the West, Lu Ye Chu Cai in Yuan Dynasty, recorded that "the sea is hundreds of miles wide, and there are islands in the sea, all of which are birds falling off their feathers".

Then the vast sea should be a sea with islands, and birds lose their hair like snow.

Looking through Shan Hai Jing, I found several paragraphs:

1, the classic of the Great Northern Wilderness: "In the Great Northern Wilderness, ... was solved by Li Qian and Xiao Zefang."

2. Hainei Xijing: "There are hundreds of millions of miles in the southwest and north of Hainei ... osawa, where birds are born, is in the north of Yanmen."

Then the vast sea should be the sea in the north or the big lake. According to Cen's research on Chinese and foreign historical geography, this refers to the North Sea and Lake Baikal.

If according to the date dd, the vast sea is a desert, there is no artistic conception, although most of the north is desert now. I think, when I started to stand up, I decided to call it the vast sea, probably a piece of Wang Yang. If you don't want another name, it's probably the one above.

In "Bai Xuege Farewell to the Home of Secretary Wu Tian", there is a poem "The sand and sea ice are deep and the darkness is endless".