Keep your distance when your friends are expensive, but you are stiff with your friends. In the article "Friendship in Zhang Qian", when Wen Tianxiang was rich, he repeatedly invited his friend Zhang Qian zai to be an official, but Zhang Qian zai did not accept it. Thus, Zhang Qian kept his distance when his friends were expensive. After Wen Tianxiang resigned, Zhang Qian served him for three years and took care of his affairs, which shows his noble sentiment of suffering and * * * when his friends were in trouble.