Update url

readme.md

@@ -27,7 +27,7 @@ Here `porto_roadmap_edge_porto_True_1_merge/` stores the road network data, and
 
 ~~For data privacy, we did not release the BJ data.~~
 
-We released the Beijing trajectory dataset collected in November 2015, including 1018312 trajectories. We obtained the corresponding road network data from OpenStreetMap and preprocessed the trajectory data to get the Beijing trajectory dataset matched to the road network, and we believed that this dataset could promote the development of urban trajectory mining tasks. Please refer to file [bj-data-introduction.md](./bj-data-introduction.md) for a more detailed data introduction. [Data Download](https://drive.google.com/file/d/1NXHrmh2H5ZTBZCUmYeGSJGQbgl4bjQnt/view)
+We released the Beijing trajectory dataset collected in November 2015, including 1018312 trajectories. We obtained the corresponding road network data from OpenStreetMap and preprocessed the trajectory data to get the Beijing trajectory dataset matched to the road network, and we believed that this dataset could promote the development of urban trajectory mining tasks. Please refer to file [bj-data-introduction.md](./bj-data-introduction.md) for a more detailed data introduction. [Data Download](https://pan.baidu.com/s/1TbqhtImm_dWQZ1-9-1XsIQ?pwd=1231)
 
 ## Pre-Train