忠孝仁义
[zhōng xiào rén yì]
These are fundamental virtues in traditional Chinese culture. 'Loyalty' (忠) to the country, 'filial piety' (孝) towards parents, being 'benevolent and kind' (仁), and upholding 'righteousness' (义). Using these virtues as a username expresses admiration for and commitment to high moral standards.