Firstsing. According to the letter, the Chinese government raided the headquarters, seized the computers, and have held most of the employees for questioning. Some have been kept in excess of 100 hours. The authorities are trying to get someone to admit wrongdoing so the government can "legally" take the company's funds, apparently because Firstsing is doing well in a poorer neighborhood and the government wants a piece of the action.
It isn't known if Firstsing is guilty of any sort of chicanery, but the way employees are being treated is distressing. They've been told that their families may be held in captivity for up to a month, and the author of the e-mail fears for their safety.