美国国务院5月28日发稿：将在特朗普总统领导下，会同国土安全部，积极吊销中国留学生签证，包括与中共有联系的学生、在关键领域学习的学生。未来将调整签证审批标准，加强对来自中国和香港的签证申请的审查。
另一篇新闻稿说：外国官员要求美国网络平台实施全球性内容管制政策、或参与其内容审查，或基于美国公民/居民在美国社交平台上的贴文而扬言逮捕，这侵害美国主权、影响美国人言论自由。将依法对此类外国官员及其家人实施签证限制措施。
（纽约时报）
BY 竹新社
Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.
Mr. Durov launched Telegram in late 2013 with his brother, Nikolai, just months before he was pushed out of VK, the Russian social-media platform he founded. Mr. Durov pitched his new app—funded with the proceeds from the VK sale—less as a business than as a way for people to send messages while avoiding government surveillance and censorship.
竹新社 from us