Enter through the East Gate of Chongqing South Shore Changjia汇 Jing, Building 3, Unit 9-1. (Note: "汇" is repeated in the original text, which may be a typo. If it is a proper name, it should be kept as is. However, in this translation, I have removed the second “汇” as it seems to be a mistake.) For a more natural English expression, it should be: Enter through the East Gate of Chongqing South Shore Changjiang Confluence, Building 3, Unit 9-1.