Group 1 - The "Spring Festival 3 Billion Free Order" campaign by Qianwen App launched on February 6, allowing users to order milk tea for free using AI-generated phrases, resulting in over 1 million orders within 3 hours [1] - Qianwen adjusted the default sharing method for red envelopes on WeChat to "password red envelopes" in response to platform restrictions [2] - WeChat has previously banned red envelopes during the Spring Festival marketing period, including those from its subsidiary Yuanbao, indicating a crackdown on excessive marketing and misleading sharing practices [4] Group 2 - On February 5, Baidu's Wenxin Assistant faced a similar ban on its red envelope sharing link by WeChat, which cited misleading content as the reason for the block [6] - Following the ban, Baidu also switched to a "password red envelope" format, requiring users to manually copy the password to participate in the activity, a common method to bypass platform restrictions [6]