芮氏

芮氏	Ruì shì	(Tw) (seismology) Richter (scale)
芮	Ruì	surname Rui
芮	ruì	small
氏	shì	(bound form) family name; surname (as in 王氏 "the Wang clan") / (bound form) maiden name; née (as in 李王氏 "Mrs. Li, née Wang") / (bound form) honorific suffix added to the surname or full name of a notable person, esp. historical or scholarly figures
氏	zhī	used in 月氏 / used in 阏氏