indicates that a situation or state continues to exist as before despite other factors

used to offer a choice between options, most commonly in questions

indicates that a certain choice or action is preferable after comparison or consideration

expressing realization or discovery that a certain fact remains true after consideration or comparison

used with words like 无论 wú​lùn or 不管 bù​guǎn to show that a result remains the same regardless of which option in a range is chosen