On March 20th, what is the road condition like? Can you drive around the island ?

Yes, I drove around Taiwan Island for a week last March, covering a distance of 2,000 kilometers. I drove alone and it took about 8 days, including one day to go to Blue Lake. I returned the car in the evening and stayed at the airport for one night before flying to Denmark, but you need to rent a car in advance.

It's too early to tell if there will be a blizzard at that time.

At that time, I encountered a blizzard on the black sand beach, but it was better in the north of the island, with little snow accumulation. I was going counterclockwise at the time, and I thought to myself, "If I encounter a blizzard in the north of the island, I'll turn back to the southern island." Little did I know that three days later, I would encounter a blizzard on the black sand beach. When I arrived at my accommodation, I checked and found that the road was closed. At that time, it was still easy to travel in the north of the island, with a full-speed highway and four-wheel drive. I drove the entire journey alone in a Mitsubishi SUV.