No. 20 South Street diagonally across the road is Tianjixiang Museum. The only multinational trading firm in the ancient city, formerly known as Changsheng Xuyanghuozhuang, was founded in Qingguangxu 22 years (1896), closed in 1917, mainly engaged in import and export silk, tea, fur, fabric, foreign goods, etc. Today, there are many exhibition halls, such as China Jade Museum, China Copper Museum, China Porcelain Museum, etc., displaying furniture, porcelain, calligraphy and paintings, embroidery products and the like in different historical periods. Then why do not hang the "long Sheng" sign at the door and hang "Tian auspicious", after going out, the author suddenly open, diagonally opposite is "long Sheng", here is "long Sheng", there is a feeling of looking in the mirror, it is indeed a bit messy.