From a story on bloomberg.com headlined “China Says It May Have Detected Signals From Alien Civilizations”:

China said its giant Sky Eye telescope may have picked up signs of alien civilizations, according to a report by the state-backed Science and Technology Daily, which then appeared to have deleted the report and posts about the discovery.

The narrow-band electromagnetic signals detected by Sky Eye — the world’s largest radio telescope — differ from previous ones captured and the team is further investigating them, the report said, citing Zhang Tonjie, chief scientist of an extraterrestrial civilization search team co-founded by Beijing Normal University, the National Astronomical Observatory of the Chinese Academy of Sciences and the University of California, Berkeley.