A. History and Development of the Company We commenced our commercial operations in 2015 through Hangzhou Aimi and Shanghai Xunmeng in parallel. In June 2016, to streamline the operations of these two companies, Hangzhou Aimi acquired 100% of the equity interests in Shanghai Xunmeng, and Shanghai Xunmeng became a wholly owned subsidiary of Hangzhou Aimi. We incorporated Walnut Street Group Holding Limited under the laws of the Cayman Islands as our holding company in April 2015 to facilitate international financing. In the same month, we established HongKong Walnut Street Limited, or Walnut HK, our wholly owned Hong Kong subsidiary, and Walnut HK established a wholly owned subsidiary, Hangzhou Weimi. Walnut HK subsequently established two additional wholly owned subsidiaries, Walnut Shanghai and Xinzhijiang, in January 2018 and April 2018, respectively. In July 2018, we renamed our company “Pinduoduo Inc.” We established an additional wholly owned subsidiary, Shanghai Yucan Information Technology Co., Ltd., or Shanghai Yucan, in September 2020 through Radiance Sea Hong Kong Limited, an entity that we incorporated under the laws of Hong Kong in the same year.