There are as many as 387 white-stone Buddha statues produced in Dingzhou 定州 that contain detailed information of dates, including year, month and day. Such detailed dating information is not found in any other area-specific statue group. In Dingzhou, the statue-making activities continued throughout the year, even though, due to the northern climate, from first to eighth lunar month marked the most active period, whereas from the ninth to twelfth lunar month was the least active season. Each year, certain days marked the highest production of the statues: the anniversary of Buddha’s Enlightenment (the eighth day of the second month), the anniversary of Buddha’s birth (the eighth day of the fourth month) and the Ghost Festival (the 15th day of the seventh month). The statues produced on these days make up one-seventh of the total production, reflecting the custom at the time of creating Buddha statues during Buddhist festivals. Moreover, the statues produced on the eighth, 15th and 23rd day of each lunar month make up the second-fifth of the total production, indicating the importance of the Six Fasting Days for the production of statues. This phenomenon is especially noticeable from the late Eastern Wei Dynasty (534–550) to the Northern Qi Dynasty (526–559). Besides, almost no influence from the Ten Fasting Days on the statue-production could be observed.