Shanghai-based Xiaohongshu—which means “Little Red Book” in Chinese and is backed by Alibaba Group Holding Ltd. and Tencent Holdings Ltd. —wrote in a post on China’s Twitter -like Weibo platform on June 4, “Tell me loudly, what is the date today?”<p>No paywall link to the WSJ article: <a href="https://archive.is/6XRw3" rel="nofollow">https://archive.is/6XRw3</a>