The Middle Heaven Great Emperor of the North Pole Star of Purple Subtlety assists the Jade Emperor in administering the longitudes and latitudes of Heaven and Earth; the sun; the moon and stars; as well as the climate of the four seasons. He is honored as the 'Master of all stars; assistant sovereign of the three realms; correspondent with the Original Vital Breath and inferior only to Great Heaven'.

In Daoist ritual; as well as the Three Pure Ones; the Four Heavenly Ministers are also worshipped. Each of the Four Heavenly Ministers has his own divine birthday: The Great Jade Emperor on the 9th of the first lunar month; the Middle Heaven Great Emperor of the North Pole Star of Purple Subtlety on the the 27th of the tenth month; the Great Heavenly Emperor of the Highest Palace of Polaris on the 2nd of the second month; and the Imperial Earth Goddess on the 18th of the third month. Many Daoists go to temples to burn incense on these days.