diff --git a/README.md b/README.md
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@@ -55,3 +55,5 @@ dt：district
 
 ## 标注本项目的论文
 [1] JIANG ZY, ZHAO S, YANG ZY, JIA FL, HÁJEK J. A review of Copelatus Erichson, 1832 of Mainland China, with description of ten new species from the japonicus complex (Coleoptera: Dytiscidae: Copelatinae). Zootaxa. 2022;5124(3):251-295. doi:10.11646/zootaxa.5124.3.1
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+[2] Chang H, Li L, Huang J, Zhang Q, Chin KS. Tracking traffic congestion and accidents using social media data: A case study of Shanghai. Accid Anal Prev. 2022;169(August 2021):106618. doi:10.1016/j.aap.2022.106618