Yin Teng-kuo, who writes about folk customs, says that Mahjongg dates back to May and June of 1840, when it was invented by Chen Cheng-lun from Ningpo.
民俗作家殷登國指出，麻將的正式誕生，是清朝道光二十年（西元一八四十年）五、六月間，由寧波人陳政倫發明。