In 2021, the COVID-19 pandemic worldwide will gradually cease its spread. The outlook of some countries such as China, Singapore, and Malaysia will improve, and the economy will recover slowly and steadily. Between 2021-2022, the majority of nations worldwide will re-establish their airline industries and air travel will resume. Although the global economy will progressively return to normal, various disasters will still happen frequently. Some of these catastrophes will even be more severe than those of previous years, and many people will perish as a result.