Many people have friends,so what is the standard of nice friends?
First,he should be friendly and polite.
Second,he makes strangers feel comfortable whereever he is.
Third,he always try to stand on the position of the others
Last,when there is disagreement between you two,he can keep calm.
Also,a nice friend would have rich knowledge,be able to solve problems ,and the most important,he treats you with heart and soul.
希望对你有帮助