There was a Censor called Wei Jun who was once responsible for Jiangxia. Sent back to the capital with a message, on his return journey he stopped to transact business at a hostel pavilion. He suddenly noticed a white spider descending from one of the pavilion columns, its body extremely small. Wei Jun said: “This is a danger to people. I have heard that, though small, when it bites people even good medicine has no effect.” He therefore directed that it be killed. Presently he saw another white one descending, and had it killed like the last one. Looking up beyond it he saw that the web led to a lair, so he ordered his retinue to fetch a broom and sweep it all away, and said: “I have now eliminated the threat to life.” The following day, wishing to leave, he touched the column with his hand as he passed, and felt a sharp unbearable pain; it turned out to be the bite of a white spider on the column. Wei Jun was shocked, and immediately flicked it away. It soon swelled up, and before several days had passed this affected his entire arm. Due to this he was carried to Jiangxia in a sedan chair. Physicians and medicines had no effect, and eventually his left arm was pouring blood; when his blood was exhausted he died. Before this Wei Jun’s lady mother was in Jiangxia, and dreamed that a white-robed person addressed her: “My two brothers, younger and elder, were killed by your son. I have reported to the heavenly emperor, and the emperor has avenged this injustice according to my request.” When they finished speaking, the lady awoke in shock. Marvelling greatly at it, she was too disturbed to speak. A little more than ten days later, when Wei Jun arrived and she heard the full story, she came to understand the dream, realising that the day of her vision was indeed that on which he had killed the spider in the hostel pavilion. The lady wept and said: “How can you live for long now?” Several days later Wei Jun died.
Zhang Du 張讀, Xuanshi Zhi 宣室志 (Stories from the Chamber of Dissemination),1.3 (Tale 4):
館亭蜘蛛
有御史韋君,嘗從事江夏,復以奉使至京,既還,道次商於館亭中。忽見亭柱有白蜘蛛曳而下,狀甚微。韋君曰:「是為人之患也。吾聞汝雖小,螫人,良藥無及。」因以指殺焉。俄又見一白者下,如前所殺之。且視其上,有綱為窟,韋乃命左右挈箒盡為盡掃去,且曰:「為人患者,吾已除矣。」明日欲去,因以手撫去柱,忽覺指痛不可忍,乃是有一白蜘蛛螫其上。韋君驚,即拂去。俄遂腫焉,不數日而盡一臂。由是肩輿舁至江夏。醫藥無及,竟以左臂潰為血,血盡而終。先是韋君先夫人在江夏,夢一白衣人謂曰:「我弟兄二人為汝子所殺。吾告上帝,帝用雪其寃,且遂吾請。」言畢,夫人驚寤。甚異之,惡不能言。後旬餘而韋君至,具得其狀,方悟所夢,覺為夢日,果其殺蜘蛛於館亭時也。夫人泣曰:「其能久乎!」數日而韋君終矣。
Zhang Du 張讀, Xuanshi Zhi 宣室志 (Stories from the Chamber of Dissemination)in Du yi zhi, Xuanshi Zhi 獨異志,宣室志 (Outstanding Fantastic Stories, Stories from the Chamber of Dissemination), edited by Zhang Yongqin 张永钦 and Hou Zhiming 侯志明 (Beijing: Zhonghua shuju, 1983)
The version transmitted in the Taiping Guangji varies slightly from this:
Wei Jun 韋君
There was a Censor called Wei Jun who was once responsible for Jiangxia. Sent back to the capital with a message, on his return journey he stopped to transact business at a hostel pavilion. He suddenly noticed a white spider descending from one of the pavilion columns, its body extremely small. Wei Jun said: “This is a danger to people. I have heard that, though small, when it bites people even good medicine has no effect.” He therefore directed that it be killed. Presently he saw another white one descending, and had it killed like the last one. Looking up beyond it he saw that the web led to a lair, so he ordered his retinue to fetch a broom to remove it all, and said: “I have now eliminated the threat to life.” The following day, about to leave, he touched the column with his hand as he passed, and felt a sharp pain that he could not bear; it turned out to be the bite of a white spider on the column. Wei Jun was shocked, and immediately flicked it away. Soon the swelling grew, and before several days had passed this affected his entire arm. Due to this he was carried to Jiangxia in a sedan chair. Physicians and medicines had no effect, and eventually his left arm was pouring blood; when his blood was exhausted he died. Before this Wei Jun’s lady mother was in Jiangxia, and dreamed that a white-robed person addressed her: “I had three brothers, younger and elder, and two were killed by your son. I have reported to the heavenly emperor, and the emperor felt sympathy and agreed to my request.” When they finished speaking, the lady awoke in shock. Marvelling greatly at it, she was too disturbed to speak. A little more than ten days later, when Wei Jun arrived and she heard the full story, she came to understand the dream, realising that the day of her vision was indeed that on which he had been in the hostel pavilion. The lady wept and said: “How can you live for long now?” Several days later Wei Jun died.
From Xuanshizhi
Li Fang 李昉, et al., Taiping guangji 太平廣記 (Extensive Gleanings from the Period of Great Harmony), 10 vols (Beijing: Zhonghua shuju, 1961), x, 476.3920:
韋君
有御史韋君嘗從事江夏。後以奉使至京。既還。道次商於。館亭中。忽見亭柱有白蜘蛛曳而下。狀甚微。韋君曰。是人之患也。吾聞雖小。螫人。良藥無及。因以指殺焉。俄又見一白者下。如前所殺之。且觀其上。有綱為窟。韋乃命左右挈帚。盡為去。且曰。為人患者。吾已除矣。明日將去。因以手撫去柱。忽覺指痛。不可忍之。乃是有一白蜘蛛螫其上。韋君驚。即拂去。俄遂腫延。不數日而盡一臂。由是肩舁至江夏。醫藥無及。竟以左臂潰為血。血盡而終。先是韋君先夫人在江夏。夢一白衣人謂曰。我弟兄三人。其二人為汝子所殺。吾告上帝。帝用憫其寃。且遂吾請。言畢。夫人驚寤。甚異之。惡不能言。後旬餘而韋君至。具得其狀。方悟所夢。覺為夢日。果其館亭時也。夫人泣曰。其能久乎。數日而韋君終矣。出宣室志