东三角

 安徽省东三角

https://www.bilibili.com/video/BV1Ni4y1A75Y/?spm_id_from=333.788.recommend_more_video.-1

https://x0.ifengimg.com/cmpp/fck/2020_03/dde2969b97dd32e_w1080_h575.jpg

https://x0.ifengimg.com/cmpp/fck/2020_03/20b614c89ac72b5_w1080_h797.jpg

- 东三角图源自网络，若有侵权请告知