From the Southern Weekend, translated by the EastSouthWestNorth blog (link):
Xu Qian and Wang Ke are Internet police officers at the Internet Security Supervisory Department of the Shenzhen Public Security Bureau. In the past, they were just “lurking” in the dark at the forums and watching the Internet netizens bustle around. The netizens had not even been aware that they existed.
Presently, more than 100 Internet police officers have formed a large Internet force of “virtual police” and they have stepped out into the open. On the Internet, they now have the two cute image spokespersons, “Jingjing” and “Chacha.”
In order to strengthen the “security” front, the Internet police also set up a “police sentry box” at the bottom of the Shenzhen News Net home page. The red “@” on top of the police sentry box is perpetually spinning. “Its effect is equivalent to an Internet ‘110‘.” Furthermore, “Jingjing” and “Chacha” have obtained the QQ numbers: 66110 and 777110. In their personal QQ space, they offer services such as filing police report, case studies, legal advice, and so on. These services are provided by Xu Qian and his colleagues.
See also CDT’s “Online police to expand from Shenzhen to 8 other cities” (link)