云南省大理州沙溪鎮寺登村一景（無人機照片，4月21日攝）。沙溪鎮位于云南省大理州劍川縣。自唐宋起，沙溪鎮便因豐饒的物產和平坦的地勢，成為茶馬古道上的貿易重鎮。馬幫馱著茶葉、鹽巴與絲綢，一路翻山越嶺，在此休整交易。[新華社記者 胡超 攝]

An aerial drone photo taken on April 21, 2025 shows the scenery of Sideng Village in Shaxi Town, Jianchuan County, southwest China's Yunnan Province. A remote town in Jianchuan County, Shaxi was once an important trading hub for tea, herbs, silks and salt on the ancient Tea Horse Road, a trade route dating back to the Tang Dynasty (618-907). (Xinhua/Hu Chao)