Tomato in Chinese is Xi Hong Shi, "Xi" means west, "Hong" means red and "Shi" sounds like city.

BBC: Sex, lies and videotapes: A year in Chinese microblogs

As Mr Bo was known for promoting old-fashioned "red" Maoist priniciples in the western city of Chongqing, calling him "west red city" - Xi Hong Shi - or tomato - made sense to the microbloggers.

BBC: Sex, lies and videotapes: A year in Chinese microblogs

Shi Yinhong, a security expert at Beijing's Renmin University, tells Hong Kong's South China Morning Post that Beijing appears to have "downgraded" the visit by sending Wang Jiarui, a minister-level official, to meet Mr Choe.

BBC: China media: North Korea diplomacy

In response to overseas media reports that the Bank of China has closed the account of North Korea's main foreign exchange bank, Shi Yinhong, an international affairs expert at Beijing's Renmin University tells Hong Kong's South China Morning Post that Beijing is losing patience with Pyongyang.

BBC: China media: Cyber espionage

Hong Kong gave Beijing investigators detailed data that apparently enabled them to link Shi's personal e-mail account and the specific message he sent to the IP address of his computer.

FORBES: Did Semel's Yahoo! Help Beijing Jail Reporter?

"A large number of these companies have set up controlling companies in third countries since the missile tests, " said Shi Mei-cheng, an official of Taipei's Economic Affairs Ministry who is based in Hong Kong.

CNN: The Lowering of the Flag