"Hello", a simple blessing, has also become a fixed collocation for people in various occasions. For example, say goodbye to others before going out, and others will say, "Have a nice trip." If you end your business cooperation with others, it is also a polite way: "Happy cooperation and good luck." In life, there are always various ways to bless others, but "Hello" has always been one of the most popular expressions.
"Hello" is not only a polite blessing to others, but also our own expectation of life. When we are sick, difficult and unfortunate, we hope that we can be safe and sound. "Safe and sound" is another expression of "I wish you peace". So "Hello" is a warm emotion, full of humanistic care and the pursuit of a better life.