In the twelfth lunar month in the sixth year of Yuan Dynasty (1340), "most of the fog locks have not seen the sun for many days, and all the doors are hidden in the wind." "The wind haze enveloped the capital for several days, and the emperor feared widespread indignation and discontent. He sent the ritual department to burn incense and pray for the gods to drive away the wind and haze. "
-"History of the Yuan Dynasty"
In the early spring of the fourth year of Ming Chenghua (1468), "this year, since spring and summer, the weather has been cold and miserable, windy, foggy and cloudy." "In these two days, the yellow fog covered the sun and watched the stars and the sun day and night."
In the seventeenth year of Chenghua in the Ming Dynasty (148 1), in April, "the wind blew wildly for several days, and the dust covered the sky."
In the 21st year of Chenghua (1485), "At the end of the month, the capital was overcast and scattered from morning till night." "After three days, the smog began to rise again, and it did not disperse for five days, resulting in poor grain transportation, and Shi Jing official warehouse was in a hurry."
Hongzhi Decade (1497) "It didn't snow in Beijing last winter, but it was windy and cloudy this spring". "Haze and dust accumulate outside Xizhimen, which is hard to see by passers-by. The loyalist army half covered the city gate to cover the dust. "
In the eleventh year of Wanli (1583), "the heart has the first month, and the capital has a haze. In February, there was haze in Beijing. In April, Zhang Siwei, a great scholar, said,' The haze is steep, and the yellow sand covers the sky.' ""I haven't seen the western hills for five days. Hungry people go to the city to beg, and the good people in the temple give it. " -"A Record of Ming Xianzong"
Sixty years of Kangxi (172 1) "Today's (test) issue, covered by yellow fog, covered by blue sand. With such a strong wind, the list will be damaged. "
In the fifteenth year of Jiaqing (18 10), "After Beijing entered the twelfth lunar month, fog and haze rose from time to time, and it was reported in Wanping and Daxing." "Qiongdao (now Beihai) is foggy and closed, and it is difficult to see the truth. Jingshan Park is hidden in the wind and rain, and the imperial secretary is hidden in the temple and sometimes visits. "
In the sixth year of Xianfeng (1856), "since the winter, when there was little snow and more fog, the capital was in Changping and Wanping." -"Draft of Qing History"