Group 1 - The core point of the article is that Yuyin Co., Ltd. (002177.SZ) announced the sale of certain properties owned by its wholly-owned subsidiary, Beijing Yuxin Zhihui Technology Co., Ltd. [1] - The properties being sold include a specific unit in a building located at No. 69, Tonghuihe North Road, Chaoyang District, Beijing, as well as two parking spaces in the underground garage of the same location [1] - The total transaction price for the sale of these properties is set at RMB 28.23 million [1]