Harbin by Liaowen [Twitter/X]
※Illustration shared with permission from the artist. If you like this artwork please support the artist by visiting the source.
(I think they meant 9,462,300 and 3,298,600 for the population.)
太阳岛酒家 Sun Island Restaurant
第一百货商店 No. 1 Commodity Shop
教育书店 Education Bookstore
国际机场候机楼 Passengers' Waiting Floor at International Airport
松花江畔 The riverside of Songhua River
中央大街步行街 Walking Street in Central Street
雪乡 Snow Town
冰灯 Ice lights
雪雕 Snow carving
冬泳 Swimming in winter
The back of the first postcard
Sorry about the weird lines. I thought the scanner was broken, but when I tried a personal photo, it came out fine. It must be something about these postcards.