Jing Shu felt it was largely because of their inability to acclimate. With a temperature of 60 degrees Celsius, which was no longer suitable for human habitation, the government had decided to use ships, trains, and other transport modes to first evacuate people from Hainan. Unfortunately, a large number of people died on the way, and more died after they reached their destination.
After all, Hainan is tropical and doesn't get cold at night. However, in the Northeast, the temperature would drop to over ten degrees below zero Celsius at night and skyrocket to over 40 degrees Celsius during the day, creating a huge temperature difference that easily led to various diseases.
