Sina Weibo the domestic microblogging services including the first weibo service Fanfou. Many popular non-China-based microblogging services like Twitter, Facebook, and Plurk have been blocked from viewing since then. Sina's CEO Charles Chao considered this to be an opportunity. SINA Corporation launched the tested version of Sina Weibo on 14 August 2009. Basic functions including message, private message, comment and re-post were made possible in September 2009. A Sina Weibo–compatible API platform for developing third-party applications was launched on 28 July 2010. On 1 December 2010, the website experienced an outage, which administrators later said was due to the increasing numbers of
Han Jian (Weibo warlord) was then named Han Junxiong) was a long-time officer at Weibo Circuit, and seized control of the circuit when the soldiers mutinied in 870 against then-military governor ("Jiedushi") He Quanhao and killed He Quanhao due to He Quanhao's harsh discipline. Han Jian became deputy military governor after his father became military governor. After Han Yunzhong died in 874, the Weibo soldiers supported Han Jian to succeed him, and then-ruling Emperor Xizong agreed, making Han Jian acting military governor initially, and then full military governor in 875. He gave Han Jian the honorary chancellor designation of "Tong Zhongshu Menxia Pingzhangshi" (同中書門下平章事)