The spy balloon affair continues to strain Sino-US relations. On February 4, the US Air Force shot down a Chinese balloon. But then three more unidentified flying objects appeared in US and Canadian airspace this past weekend, sparking speculation about extraterrestrials on social media. The objects were smaller than the first balloon and flew lower. They were also slaughtered over the weekend. Whether these were also Chinese spy tools is still under investigation. But there are many clues. The US government has accused Beijing of using these balloons to spy on not just the United States, but more than 40 countries.