The Google.com search engine could be accessed briefly in mainland China on Sunday night after years of disruption by the authorities that has almost completely blocked the use of the website.
At about 11.30pm, a growing number of Chinese internet users put posts online saying they were able to access Google's search engine through Google.com, Google.com.hk, Google.com.vn, Google.com.sg.
Yet Gmail and other popular foreign websites, such as Facebook and YouTube, remained blocked during the period, according to the internet users.
Access to Google was short-lived because all the services were once again blocked by about 1.15am on Monday.
Google declined to comment on the matter.
Some Chinese media said on their official microblogs that access had become possible because Google had introduced a series of new IP servers - vnjpukinarespksasg - in Asian areas.
These had taken the Great Firewall of Chinese authorities - the world's most sophisticated internet censorship mechanism - at least an hour to recognise and then block.