一切經音義 33.106

33.106

建旐（治繞反爾雅緇廣充煏長尋旐周禮龜虵為旐縣鄙建旃鄭玄曰象其扜難避害也）。

Jiànzhào (建旐, erecting the snake-and-tortoise banner) (zhì + rào [zhào] fanqie. The Erya says: 'A black silk streamer of full width and eight spans in length is called a zhào.' The Rites of Zhou says: 'A banner painted with tortoises and snakes is a zhào; the districts and prefectures set up zhān banners.' Zheng Xuan says: 'It depicts [these creatures] to ward off calamities and avoid harms.').