Fairytale Hokkaido travel, thick snow, colorful cottages, long coastline and retro trams

If winter fairy tales have names, there must be a part called Hokkaido❄ Thick snow, colorful cottages, long coastlines, and retro trams, each of which satisfies my fantasy of a snowy fairy tale.
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Weather and outfit:
Hokkaido welcomes the snowy season from December to February❄
Weather: Snow showers, cloudy; average temperature -8℃~-3℃
Thick coat: Friends who are afraid of cold must prepare down jackets. If you love beauty and want to take photos that you haven't found, you can wear a thick woolen coat
Shoes: Be sure to prepare waterproof and non-slip shoes
Accessories: hats, gloves, scarves, sunglasses, there are too many fun things to do in Hokkaido in winter
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Route
D1: Sapporo airport pick-up--Tanukikoji Shopping Street
D2: Sapporo--Music Box Museum--Otaru Canal--Tenguyama--Funamizaka
D3: Sapporo--Asahikawa Zoo--Mori Toki Café
D4: Blue Pond--Shirahige Falls--Forest Elf Dew Taiwan
D5: Hot Spring Street--Noboribetsu Jigokudani--Bear Ranch--Lake Toya
D6: Lake Toya--Niseko Skiing
D7: Sapporo Shopping--Sapporo Airport Transfer
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Attractions Check-in
Sapporo: ✔Odori Park✔Sapporo TV Tower✔Shiroi Koibito Park
Otaru: ✔Otaru Canal✔Music Box Museum✔Otaru City Museum of Art
Niseko: ✔Niseko Ski Resort✔Niseko Hot Spring
Noboribetsu: ✔Jigokudani✔Noboribetsu Hot Spring Street✔Noboribetsu Bear Ranch
Lake Toya: ✔Lake Toya Observatory✔Lake Toya Hot Spring✔Lake Toya Cruise
Furano: ✔Furano Flower Field✔Farm Tomita✔Furano Ski Area
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Travel tips
Don't make calls or loud speakers on the train or subway, it's really very quiet. Don't worry too much about the language barrier, English can be understood with the simplest words and sign language. Get a translation app, and it's completely OK to travel freely in Chinese, Japanese and English.

The Shinkansen is really expensive without a pass, so it is better to choose a plane for a longer Trip. You can also exchange some Japanese yen to use in small shops (especially ramen shops). There are currency exchange machines and counters everywhere, so you don’t have to worry. In Japan, taxis, hotels, or restaurants/convenience stores basically accept credit cards.